Child Growth and Development Chapter 4 Physical Development in Infancy & Toddlerhood

Chapter Physical Development in Infancy Chapter Objectives After this chapter , you should be able to . Describe the physical changes that occur during the first two years of life . Identify common infant reflexes . Discuss the sleep needs during the first two years of life . Summarize the sequence of both fine and gross motor skills . Recognize the developing sensory capacities of infants and toddlers . Explain how to meet the evolving nutritional needs of infants and toddlers . Introduction Welcome to the story of development from infancy through from birth until about two years of age . Researchers have given this part of the life span more attention than any other period , perhaps because changes during this time are so dramatic and so noticeable and perhaps because we have assumed that what happens during these years provides a foundation for one life to come . However , it has been argued that the significance of development during these years has been overstated ( 1999 ) Nevertheless , this is the period of life that contemporary educators , healthcare providers , and parents have focused on most heavily . We will examine growth and nutrition during infancy , as well as other prominent physical changes that take place during this Figure A sleeping newborn ?

Lifespan Development Module by Lumen Learning references 200 Lifespan Psychology by Laura , licensed under BY Image by Carlo Navarro on Growth and Development Rapid Physical Changes As mentioned in the previous chapter , the average newborn in the United States weighs about pounds and is about 20 inches in length . After about a weight loss in the first few days , there is a period of rapid growth . By the time an infant is months old , it usually doubles in weight and by one year has tripled its birth weight . By age , the weight has quadrupled . The average length at one year is about Two hormones are very important to this growth process . The first is Human Growth Hormone ( which influences all growth except that in the Central Nervous System ( The hormone influencing growth in the is called Thyroid Stimulating Hormone . Together these hormones influence the growth in early childhood . Sleep is very important to the growth process as these hormones are released as children sleep each night . As a result , children need 11 to 14 hours of sleep from to years old . Parents may establish rituals , such as reading a story , taking a bath , brushing teeth , etc . to help children wind down and get the sleep they so desperately Figure infant Lifespan Development Module Infancy by Lumen Learning references 200 Lifespan Psychology by Laura , licensed under BY Children Development by Ana Leon is licensed under BY Image by Andres and Antoinette Ricardo used with permission Growth and Development

Proportions of the Body Another dramatic physical change that takes place in the first several years of life is the change in body proportions . The head initially makes up about 50 percent of our entire length when we are developing in the womb . At birth , the head makes up about 25 percent of our length ( think about how much of your length would be head if the proportions were still the same ! By age 25 it comprises about 20 percent our length . Imagine now how difficult it must be to raise one head during the first year of life ! And indeed , if you have ever seen a to month old infant lying on the stomach trying to raise the head , you know how much of a challenge this is . The comparison in this graphic was originally introduced in the last chapter . ii I . Figure Shown from left to right Human body proportions at birth , at years , at years , at 12 years , and at 19 Some ofthe most dramatic physical change that occurs during this period is in the brain . At birth , the brain is about 25 percent its adult weight and this is not true for any other part of the body . By age , it is at 75 percent its adult weight , at 95 percent by age and at 100 percent by age years . While most of the brain 100 to 200 billion neurons are present at birth , they are not fully mature and during the next several years dendrites or connections between neurons will undergo a period of transient exuberance or temporary dramatic growth . Image by is licensed under Growth and Development

Components of the Neuron Terminal buttons ( form junctions with other cells ) can body ) receive messages from other cells ) from another neuron ) Axon messages away from the cell body to other neurons , muscles . or glands ) potential ( electrical signal traveling down sheath ) covers the axon of some neurons and helps speed neural impulses ) it Figure There is a proliferation of these dendrites during the first two years so that by age , a single neuron might have thousands of dendrites . After this dramatic increase , the neural pathways that are not used will be eliminated thereby making those that are used much . Because of this proliferation of dendrites , by age two a single neuron might have thousands of dendrites . or the formation of connections between neurons , continues from the prenatal period forming thousands of new connections during infancy and . This period of rapid neural growth is referred to as Synaptic Blooming ?

This activity is occurring primarily in the cortex or the thin outer covering of the brain involved in voluntary activity and thinking . The prefrontal cortex that is located behind our forehead continues to grow and mature throughout childhood and experiences an additional growth spurt during adolescence . It is the last part of the brain to mature and will eventually comprise 85 percent of the weight . Experience will shape which of these connections are maintained and which of these are lost . Ultimately , about 40 percent of these connections will be lost ( Webb , Monk , and Nelson , 2001 ) As the prefrontal cortex matures , the child is increasingly able to regulate or Image by Martha Lally and Suzanne is licensed under Lifespan Development Module Infancy by Lumen Learning references 200 Lifespan Psychology by Laura , licensed under BY Lifespan Development A Psychological Perspective by Martha Lally and Suzanne is licensed under Growth and Development

control emotions , to plan activity , strategize , and have better judgment . Of course , this is not fully accomplished in infancy and , but continues throughout childhood and adolescence . Another major change occurring in the central nervous system is the development of myelin , a coating of fatty tissues around the axon of the neuron . Myelin helps insulate the nerve cell and speed the rate of transmission of impulses from one cell to another . This enhances the building of neural pathways and improves coordination and control of movement and thought processes . The development of myelin continues into adolescence but is most dramatic during the first several years of months year years 10 years MRI scans of human brain development Figure MRI scans ofthe human Reflexes Infants are equipped with a number of reflexes which are involuntary movements in response to stimulation . These include the sucking reflex ( infants suck on objects that touch their lips automatically ) the rooting reflex ( which involves turning toward any object that touches the cheek ) the palmar grasp ( the infant will tightly grasp any object placed in its palm ) and the dancing reflex ( evident when the infant is held in a standing position and moves its feet up and down alternately as if dancing ) These movements occur automatically and are signals that the infant is functioning well neurologically . Within the first several weeks of life these reflexes are replaced with voluntary movements or motor Infants and children grow and develop at a rapid pace during the first few years of life . The development of both gross and fine motor skills helps a child go from a completely dependent newborn to an independently functioning toddler in about a Lifespan Development Module Infancy by Lumen Learning references 200 Lifespan Psychology by Laura , licensed under BY 40 is in the public domain 12 Lifespan Development Module Infancy by Lumen Learning references 200 Lifespan Psychology by Laura , licensed under BY 40 13 Development by Ana Leon is licensed under BY Growth and Development

Table Some Common Infant Reflexes Description Image Reflex Description Image A sudden noise or Suck on loss of support to anything that the head and neck . WI cause infants Sucking touches the Moro . to spread out their arms and legs then quickly contract Figure the limbs inward When lying on the back with the head to one side infants Turning the will extend the touched flexing the limbs on the opposite Figure 4317 side ( looks like a fencer pose ) Figure Fingers Legs move in automatically . grip anything I . Stepping Grasp Stepping motion when feet that touches the palm of the hand touch a smooth surface Figure Figure The toes will fan out and curl when the sole of the foot is stroked from heel to toe Figure Lifespan Development A Psychological Perspective ( page 74 ) by Martha Lally and Suzanne is licensed under ( modified by Antoinette Ricardo ) 15 wig is in the public domain is in the public domain 17 is in the public domain 18 Image by Samuel is licensed under 19 Image by Raul Luna is licensed under BY Image is in the public domain 21 Image by of Borg is licensed under Growth and Development

Gross Motor Skills Voluntary movements involve the use of large muscle groups and are typically large movements of the arms , legs , head , and torso . They are referred to as gross motor skills ( or large motor skills ) These skills begin to develop first . Examples include moving to bring the chin up when lying on the stomach , moving the chest up , rocking back and forth on hands and knees , and then crawling . But it also includes exploring an object with one feet as many babies do as early as weeks of age if seated in a carrier or other device that frees the hips . This may be easier than reaching for an object with the hands , which requires much more practice ( Berk , 2007 ) And sometimes an infant will try to move toward an object while crawling and surprisingly move backward because ofthe greater amount of strength in the arms than in the legs ! This also tends to lead infants to pulling up on furniture , usually with the goal of reaching a desired object . Usually this will also lead to taking steps and eventually As stated above , children grow very quickly and meet physical milestones rapidly in the first few years of life . The following is a table of the major milestones ( behaviors or physical skills seen in infants and children as they grow and develop that typically occur within normal range ) that occur in children during those first formative years . 23 Table Gross Motor Milestones Typical Age What Most Children Do by This Age Can hold head up and begins to push up when lying on tummy Makes smoother movements with arms and legs months Holds head steady , unsupported Pushes down on legs when feet are on a hard surface months May be able to roll over from tummy to back Brings hands to mouth When lying on stomach , pushes up to elbows Rolls over in both directions ( front to back , back to front ) Begins to sit without support When standing , supports weight on legs and might bounce Rocks back and forth , sometimes crawling backward before moving forward 22 Development by Ana Leon is licensed under BY 23 Developmental milestones record by the National Library of Medicine is in the public domain 24 Developmental Milestones by the is in the public domain Growth and Development

Typical Age What Most Children Do by This Age Stands , holding on a Can get into sitting position Sits without support a Pulls to stand a Crawls Gets to a sitting position without help Pulls up to stand , walks holding on to furniture ( cruising ) year . I a May take a few steps without holding on a May stand alone Walks alone 18 months a May walk up steps and run a Pulls toys while walking a Can help undress self a Stands on tiptoe Kicks a ball years Begins to run a Climbs onto and down from furniture without help Walks up and down stairs holding on Throws ball overhand Figure An infant playing in the 25 Image by Andres and Antoinette Ricardo used with permission Growth and Development

Fine Motor Skills More exact movements ofthe feet , toes , hands , and fingers are referred to as fine motor skills ( or small motor skills ) These include the ability to reach and grasp an object in coordination with vision . Newborns can not grasp objects voluntarily but do wave their arms toward objects of interest . At about months of age , the infant is able to reach for an object , first with both arms and within a few weeks , with only one arm . Grasping an object involves the use of the fingers and palm , but no thumbs . Use ofthe thumb comes at about months of age when the infant is able to grasp an object using the forefinger and thumb . This is known as the pincer grip . This ability greatly enhances the ability to control and manipulate an object and infants take great delight in this newfound ability . They may spend hours picking up small objects from the floor and placing them in containers . And as those objects will often next go into the mouth , caregivers must be vigilant about keeping items small enough to be choking hazards out of reach of little fingers . By months , an infant can also watch a moving object , reach for it as it approaches and grab it . This is quite a complicated set of actions if we remember how difficult this would have been just a few months earlier . Figure infant feeding themselves . Physical Fine Motor Milestones While fine motor skills are slower to develop ( in accordance with development ) pretty remarkable progress is made in fine motor development during the first two years . As stated above , in the first few years of life children go from having no intentional fine motor control to being able to manipulate objects to play and learn , as well as beginning to care of themselves . The following is a table of the major milestones in fine motor development . Children Development by Ana Leon is licensed under BY 27 Image by Matt Preston is licensed under Growth and Development

Table Fine Motor Milestones Typical Age What Most Children Do by This Age months Grasps reflexively Does not reach for objects Holds hands in fist months Brings hands to mouth Uses hands and eyes together , such as seeing a toy and reaching for it Follows moving things with eyes from side to side Can hold a toy with whole hand grasp ) and shake it and swing at dangling toys months Reaches with both arms Brings things to mouth Begins to pass things from one hand to the other months Puts things in mouth Moves things smoothly from one hand to the other Picks up things between thumb and index finger ( pincer grip ) year Reaches with one hand Bangs two things together Puts things in a container , takes things out of a container Lets things go without help Pokes with index ( pointer ) finger 18 months Scribbles on own Can help undress herself Drinks from a cup Eats with a spoon with some accuracy Stacks objects years Builds towers of or more blocks Might use one hand more than the other Makes copies of straight lines and circles Enjoys pouring and filling large buttons Unzips large zippers Drinks and feeds self with more accuracy 28 Developmental Milestones by the is in the public domain Growth and Development

Sensory Capacities Throughout much of history , the newborn was considered a passive , disorganized being who possessed minimal abilities . William James , an early psychologist , had described the newborn world as a blooming , buzzing confusion , 1985 ) However , current research techniques have demonstrated just how developed the newborn is with especially organized sensory and perceptual abilities . Vision The womb is a dark environment void of visual stimulation . Consequently , vision is the most poorly developed sense at birth and time is needed to build those neural pathways between the eye and the brain . Newborns typically can not see further than to 16 inches away from their faces ( which is about the distance from the newborn face to the when an infant is ) Their visual acuity is about , which means that an infant can see something at 20 feet that an adult with normal vision could see at 400 feet . Thus , the world probably looks blurry to young infants . Because of their poor visual acuity , they look longer at with fewer large squares than with many small squares . Infants thresholds for seeing a visual pattern are higher than adults . Thus , toys for infants are sometimes manufactured with black and white patterns rather than pastel colors because the higher contrast between black and white makes the pattern more visible to the immature visual system . By about months , infants visual acuity improves and approximates adult acuity . Figure infant looking up at the person feeding When viewing a person face , newborns do not look at the eyes the way adults do rather , they tend to look at the less detailed part of the face . However , by or months , they will seek more detail when exploring an object visually and begin showing preferences for unusual images over familiar ones , for patterns over solids , for faces over patterns , and for dimensional objects over flat images . Newborns have difficulty distinguishing between colors , 29 Image by Ben on Growth and Development

but within a few months they are able to discriminate between colors as well as adults do . Sensitivity to binocular depth cues , which require inputs from both eyes , is evident by about months and continues to develop during the first months . By months , the infant can perceive depth perception in pictures as well ( Sen , 2001 ) Infants who have experience crawling and exploring will pay greater attention to visual cues of depth and modify their actions accordingly ( Berk , 2007 ) The infant sense of hearing is very keen at birth , and the ability to hear is evident as soon as the month of prenatal development . In fact , an infant can distinguish between very similar sounds as early as one month after birth and can distinguish between a familiar and unfamiliar voice even earlier . Infants are especially sensitive to the frequencies of sounds in human speech and prefer the exaggeration of speech , which will be discussed later . Additionally , infants are innately ready to respond to the sounds of any language , but some of this ability will be lost by or months as the infant becomes familiar with the sounds of a particular language and less sensitive to sounds that are part of an unfamiliar language . Newborns also prefer their mother voices over another female when speaking the same material ( Fifer , 1980 ) Additionally , they will register in utero specific information heard from their mother voice . You may remember the Cat in the Hat study featured in the last chapter that illustrates this . Immediately after birth , a newborn is sensitive to touch and temperature , and is also highly sensitive to pain , responding with crying and cardiovascular responses ( 2013 ) Newborns who are circumcised , which is the surgical removal of the foreskin of the penis , without anesthesia experience pain as demonstrated by increased blood pressure , increased heart rate , decreased oxygen in the blood , and a surge of stress hormones ( United States National Library of Medicine , 2016 ) Research has demonstrated that infants who were circumcised without anesthesia experienced more pain and fear during routine childhood vaccines . Fortunately , local painkillers are now used during many circumcision . Studies of taste and smell demonstrate that babies respond with different facial expressions , suggesting that certain preferences are innate . Newborns can distinguish between sour , bitter , sweet , and salty flavors and show a preference for sweet flavors . Newborns also prefer the smell of their mothers . An infant only days old is significantly more likely to turn toward its own mother breast pad than to the breast pad of another baby mother ( Porter , Makin , Davis , 1992 ) and within hours of birth an infant also shows a preference for the face of its own mother ( 2001 , Sai , 1989 ) Infants seem to be born with the ability to perceive the world in an way that is , through stimulation from more than one sensory modality . For example , infants who sucked on Growth and Development

a pacifier with either a smooth or textured surface preferred to look at a corresponding ( smooth or textured ) visual model of the pacifier . By months , infants can match lip movements with speech sounds and can match other audiovisual events . Although sensory development emphasizes the afferent processes used to take in information from the environment , these sensory processes can be affected by the infant developing motor abilities . Reaching , crawling , and other actions allow the infant to see , touch , and organize his or her experiences in new . Control Sweet 501 ( normal ) Figure The responses of infants to different Nutrition Nutritional needs change with age . Let examine how caregivers should nourish children during the first years of life and some risks to nutrition that they should be aware of . Breastfeeding Breast milk is considered the ideal diet for newborns . Colostrum , the first breast milk produced during pregnancy and just after birth has been described as liquid gold ( United States Department of Health and Human Services ( 2011 ) It is very rich in nutrients and antibodies . Breast milk changes by the third to fifth day after birth , becoming much thinner , but the right amount of fat , sugar , water and proteins to support overall physical and neurological development . For most babies , breast milk is also easier to digest than formula . Formula fed infants experience more diarrhea and upset stomachs . The absence of antibodies in formula often results in a higher rate of ear infections and respiratory infections . Children who are breastfed have lower rates of childhood leukemia , asthma , obesity , type and diabetes , and a lower risk of . The recommends that mothers breastfeed Lifespan Development A Psychological Perspective by Martha Lally and Suzanne is licensed under 31 Image by Alice and is licensed under BY Growth and Development

their infants until at least months of age and that breast milk be used in the diet throughout the first year or two . I Figure nurse helping a new mother to Maternal of Breastfeeding Several recent studies have reported that it is not just babies that benefit from breastfeeding . Breastfeeding stimulates contractions in the mother uterus to help it regain its normal size , and women who breastfeed are more likely to space their pregnancies further apart . Mothers who breastfeed are at lower risk of developing breast cancer ( et , 2015 ) especially among higher risk racial and ethnic groups ( et , 2015 et , 2012 ) Women who breastfeed have lower rates of ovarian cancer ( Terry , Cramer , 2010 ) reduced risk for developing Type diabetes ( Schwarz et , 2010 , et , 2015 ) and rheumatoid arthritis ( 2004 ) In most studies these benefits have been seen in women who breastfeed longer than months . Challenges to Breastfeeding However , most mothers who breastfeed in the United States stop breastfeeding at about weeks , often in order to return to work outside the home ( 2011 ) Mothers can certainly continue to provide breast milk to their babies by expressing and freezing the milk to be at a later time or by being available to their infants at feeding time . However , some mothers find that after the initial encouragement they receive in the hospital to breastfeed , the outside world is less supportive of such efforts . Some workplaces support breastfeeding mothers by providing flexible schedules and welcoming infants , but many do not . In addition , not all women may be able to breastfeed . Women with HIV are routinely discouraged from breastfeeding as the infection may pass to the infant . Similarly , women who are taking certain medications or undergoing radiation treatment may be told not to breastfeed ( 2011 ) 32 Image by the Military Health System is in the public domain Growth and Development

Cost of Breastfeeding In addition to the nutritional benefits of breastfeeding , breast milk does not have to be purchased . Anyone who has priced formula recently can appreciate this added incentive to breastfeeding . Prices for a year worth of formula and feeding supplies can cost well over ( 2011 ) But there are also those who challenge the belief that breast milk is free . For to be completely beneficial for infants the mother life choices will ultimately affect the quality of the nutrition an infant will receive . Let consider the nutritional intake of the mother . Breastfeeding will both limit some food and drink choices as well as necessitate an increased intake of healthier options . A simple trip down the supermarket aisles will show you that nutritious and healthier options can be more expensive than some of the cheaper more processed options . A large variety of vegetable and fruits must be consumed , accompanied by the right proportions and amounts of the whole grains , dairy products , and fat food groups . Additionally , it is also encouraged for breastfeeding mothers to take vitamins regularly . That raises the question of how free breastfeeding truly is . A Historic Look at Breastfeeding The use of wet nurses , or lactating women hired to nurse others infants , during the middle ages eventually declined and mothers increasingly breastfed their own infants in the late . In the early part of the 20 century , breastfeeding began to go through another decline . By the , it was practiced less frequently as formula began to be viewed as superior to breast milk . In the late and 19705 , greater emphasis began to be placed on natural childbirth and breastfeeding and the benefits of breastfeeding were more widely publicized . Gradually rates of breastfeeding began to climb , particularly among educated mothers who received the strongest messages to breastfeed . Today , women receive consultation from lactation specialists before being discharged from the hospital to ensure that they are informed of the benefits of breastfeeding and given support and encouragement to get their infants to get used to taking the breast . This does not always happen immediately and first time mothers , especially , can become upset or discouraged . In this case , lactation specialists and nursing staff can encourage the mother to keep trying until baby and mother are comfortable with the Alternatives to Breastfeeding There are many reasons that mothers struggle to breastfeed or should not breastfeed , including low milk supply , previous breast surgeries , illicit drug use , medications , infectious disease , and inverted nipples . Other mothers choose not to breastfeed . Some reasons for this include lack of personal comfort with nursing , the time commitment of nursing , inadequate or 33 Development by Ana Leon is licensed under BY Growth and Development

unhealthy diet , and wanting more convenience and flexibility with who and when an infant can be fed . For these mothers and infants , formula is available . Besides breast milk , infant formula is the only other milk product that the medical community considers nutritionally acceptable for infants under the age of one year ( as opposed to cow milk , goat milk , or formula ) It can be used in addition to breastfeeding ( supplementing ) or as an alternative to . The most commonly used infant formulas contain purified cow milk whey and casein as a protein source , a blend of vegetable oils as a fat source , lactose as a carbohydrate source , a mix , and other ingredients depending on the manufacturer . In addition , there are infant formulas which use soybeans as a protein source in place of cow milk ( mostly in the United States and Great Britain ) and formulas which use protein into its component amino acids for infants who are allergic to other proteins . Figure A father his infant One early argument given to promote the practice of breastfeeding was that it promoted bonding and healthy emotional development for infants . However , this does not seem to be the case . Breastfed and infants adjust equally well emotionally ( Ferguson Woodward , 1999 ) This is good news for mothers who may be unable to breastfeed for a variety of reasons and for fathers who might feel left out . When , What , and How to Introduce Solid Foods The American Academy of Pediatrics recommends children be introduced to foods other than breast milk or infant formula when they are about months old . Every child is different . Here are some signs that show that an infant is ready for foods other than breast milk or infant formula Child can sit with little or no support . Child has good head control . Child opens his or her mouth and leans forward when food is offered . Infant Formula by Wikipedia is licensed under 35 Image by Ilya is licensed under Growth and Development

How Should Foods Be Introduced ?

The American Academy of Pediatrics says that for most children , foods do not need to be given in a certain order . Children can begin eating solid foods at about months old . By the time they are or months old , children can eat a variety of foods from different food groups . These foods include infant cereals , meat or other proteins , fruits , vegetables , grains , yogurts and cheeses , and more . If feeding infant cereals , it is important to offer a variety of fortified infant cereals such as oat , barley , and instead of only rice cereal . The Food and Drug Administration does not recommend only providing infant rice cereal because there is a risk for children to be exposed to arsenic . Children should be allowed to try one food at a time at first and there should be to days before another food is introduced . This helps caregivers see ifthe child has any problems with that food , such as food allergies . Figure baby being fed solid The eight most common allergenic foods are milk , eggs , fish , shellfish , tree nuts , peanuts , wheat , and soybeans . It is no longer recommended that caregivers delay introducing these foods to all children , but if there is a family history of food allergies , the child doctor or nurse should be It may take numerous attempts before a child gains a taste for it . So caregivers should not give up if a food is refused on first offering . Infant Meal Patterns The United States Department of Agriculture Food and Nutrition Service provides the following guidance for the day time feeding of infants and toddlers . 35 Image by Ben on 37 When What and How to Introduce Solid Foods by the is in the public domain Growth and Development

Infant Meal Patterns Table Meal months months fluid ounces or formula tablespoons infant cereal , meat , fish , poultry , or formula ounces ( volume ) cottage cheese or ounces yogurt or a combination tablespoons vegetable , fruit , or both fluid ounces Lunch or Supper or formula fluid ounces or formula tablespoons infant cereal , meat , fish , poultry , whole eggs , cooked dry beans or peas or ounces cheese or ounces ( volume ) cottage cheese or ounces yogurt or a combination tablespoons vegetable , fruit , or both fluid ounces snack or formula fluid ounces or formula bread slice or crackers or tablespoons infant cereal or tablespoons vegetable , fruit , or both Required when infant is developmentally ready . All serving sizes are minimum quantities of the food components that are required to be served . The nutrition recommendations for toddlers are on the following page . 38 Infant Meals by the is in the public domain Growth and Development

Meal Patterns for Children ( years 39 Table Meal Ages cup milk Breakfast cup vegetables , fruit , or both ounce equivalent grains cup milk ounce meat or meat alternative Lunch or Supper cup vegetables cup fruits ounce equivalent of grains Select two of the following cup of milk ounce meat or meat alternative Snack cup vegetables cup fruit ounce equivalent of grains Note All serving sizes are minimum quantities of the food components that are required to be served . There can be serious effects for children when there are deficiencies in their nutrition . explore a few types of nutritional concerns . Wasting Children in developing countries and countries experiencing the harsh conditions of war are at risk for two major types of malnutrition , also referred to as wasting . Infantile marasmus refers to starvation clue to a lack of calories and protein . Children who do not receive adequate nutrition lose fat and muscle until their bodies can no longer function . Babies who are breastfed are much less at risk of malnutrition than those who are . After weaning , children who have diets deficient in protein may experience or the disease of the displaced child , often occurring after another child has been born and taken 39 Child and Adult Meals by the is in the public domain Growth and Development

over breastfeeding . This results in a loss of appetite and swelling of the abdomen as the body begins to break down the vital organs as a source of protein . Around the world the rates of wasting have been dropping . However , according to the World Health Organization and , in 2014 there were 50 million children under the age of five that experienced these forms of wasting , and 16 million were severely wasted ( 2015 ) Worldwide , these figures indicate that nearly child in every 13 suffers from some form of wasting . The majority ofthese children live in Asia ( million ) and Africa ( million ) Wasting can occur as a result of severe food shortages , regional diets that lack certain proteins and vitamins , or infectious diseases that inhibit appetite ( 1997 ) Figure child suffering from The consequences of wasting depend on how late in the progression ofthe disease parents and guardians seek medical treatment for their children . Unfortunately , in some cultures families do not seek treatment early , and as a result by the time a child is hospitalized the child often dies within the first three days after admission ( 1997 ) Several studies have reported term cognitive effects of early malnutrition ( Galler Ramsey , 1989 Galler , Ramsey , Salt Archer , 1987 , 1980 ) even when home environments were controlled ( Galler , Ramsey , Archer Salt , 1990 ) Lower IQ scores ( Galler et , 1987 ) poor attention ( Galler Ramsey , 1989 ) and behavioral issues in the classroom ( Galler et , 1990 ) have been reported in children with a history of serious malnutrition in the first few years of Milk Anemia in the United States About million children in the United States are malnourished ( Children Welfare , 1998 ) More still suffer from milk anemia , a condition in which milk consumption leads to a lack of iron in the diet . This can be due to the practice of by the is in the public domain Lifespan Development A Psychological Perspective by Martha Lally and Suzanne is licensed under Growth and Development

giving toddlers milk as a resting , when riding , when waking , and so on . Appetite declines somewhat during and a small amount of milk ( especially with added chocolate syrup ) can easily satisfy a child appetite for many hours . The calcium in milk interferes with the absorption of iron in the diet as well . Many preschools and daycare centers give toddlers a drink after they have finished their meal in order to prevent spoiling their Failure to Thrive Failure to thrive ( occurs in children whose nutritional intake is insufficient for supporting normal growth and weight gain . typically presents before two years of age , when growth rates are highest . Parents may express concern about picky eating habits , poor weight gain , or smaller size compared relative to peers of similar age . Physicians often identify during routine office visits , when a child growth parameters are not tracking appropriately on growth curves . can be caused by physical or mental issues within the child ( such as errors of metabolism , acid reflux , anemia , diarrhea , Cystic fibrosis , disease , celiac disease , cleft palate , tongue tie , milk allergies , hyperthyroidism , congenital heart disease , etc . It can also be caused by caregiver actions ( environmental ) including inability to produce enough , inadequate food supply , providing an insufficient number of feedings , and neglect . These causes may also . For instance , a child who is not getting sufficient nutrition may act content so that caregivers do not offer feedings of sufficient frequency or volume , and a child with severe acid reflux who appears to be in pain while eating may make a caregiver hesitant to offer sufficient Health Infants depend on the adults that care for them to promote and protect their health . The following section addresses common physical conditions that can affect infants , the danger of shaking babies , and the importance of . Some physical conditions and issues are very common during infancy . Many are normal , and the infant caregivers can deal with them if they occur . Mostly , it is a matter ofthe caregivers learning about what is normal for their infant and getting comfortable with the new routine in the household . New parents and caregivers often have questions about the following Bowel Movements Colic Diaper Rash Spitting Teething 42 Development by Ana Leon is licensed under BY 43 Failure to Thrive by is licensed under Growth and Development

Urination Jaundice Bowel Movements Infants bowel movements go through many changes in color and consistency , even within the first few days after birth . While the color , consistency , and frequency of stool will vary , hard or dry stools may indicate dehydration and increased frequency of watery stools may indicate diarrhea . Figure An infant getting their diaper Colic Many infants are fussy in the evenings , but if the crying does not stop and gets worse throughout the day or night , it may be caused by colic . According to the American Academy of Pediatrics , about of all infants develop colic , usually starting between and weeks of age . They may cry inconsolably or scream , extend or pull up their legs , and pass gas . Their stomachs may be enlarged . The crying spells can occur anytime , although they often get worse in the early evening . The colic will likely improve or disappear by the age of or months . There is no definite explanation for why some infants get colic . Health care providers can help ensure there is no medical reason behind the crying . Some infants seem to be soothed by being held , rocked , or wrapped snugly in a blanket . Some like a pacifier . Image by Kevin Phillips is licensed under BY Growth and Development

Shaken Baby Sy Here is a from the Center for Disease Control ( The crying . The feedings . The diaper changes . The exhaustion . If you ever been around a baby who wo stop crying , you know there potential to get frustrated . Focus on calming yourself and understand that you may not be able to calm your baby . It not or your It normal for healthy babies to cry and some babies cry much more than others . And they can not always be consoled and caregivers can feel pushed to the limit . When caregivers lose control and shake a baby it can have devastating effects . Shaken Baby Syndrome ( is a severe form of physical child abuse . may be caused from vigorously shaking an infant by the shoulders , arms , or legs . The effect can cause intracranial ( within the brain ) or intraocular ( within the eyes ) bleeding . Often there is no obvious external head trauma . Still , children with may display some outward signs Change in sleeping pattern or inability to be awakened Confused , restless , or agitated state Convulsions or seizures Loss of energy or motivation Slurred speech Uncontrollable crying Inability to be consoled Inability to nurse or eat 45 Image by David is licensed under BY Coping with Crying by the is in the public domain Growth and Development

Shaken Baby Syndrome can result in death , mental retardation or developmental delays , paralysis , severe motor dysfunction , spasticity , blindness , and seizures . Who at Risk ?

Small children are especially vulnerable to this type of abuse . Their heads are large in comparison to their bodies , and their neck muscles are weak . Children under one year of age are at highest risk , but has been reported in children up to five years of age . Shaking often occurs in response to a baby crying or having a accident . The perpetrator tends to be male and is primarily the biological father or the mother boyfriend or partner . Caregivers are responsible for about of cases . The explanation typically provided by the was playing with the baby not begin to account for the severity of trauma . Many times there is also a history of child abuse . Can It Be Prevented ?

is completely preventable . However , it is not known whether educational efforts will effectively prevent this type of abuse . Home visitation programs are shown to prevent child abuse in general . Because the child father or the mother partner often causes , they should be included in home visitation programs . Home visits bring community resources to families in their homes . Health professionals provide information , healthcare , psychological support , and other services that can help people to be more effective parents and givers . The Bottom Line I Shaking a baby can cause death or permanent brain damage . It can result in disability . I Healthy strategies for dealing with a crying baby include finding the reason for the crying checking for signs of illness or discomfort , such as diaper rash , teething , tight clothing feeding or burping soothing the baby by rubbing its back gently rocking offering a pacifier singing or talking taking a walk using a stroller or a drive in a car seat or calling the doctor if sickness is suspected All babies cry . Caregivers often feel overwhelmed by a crying baby . Calling a friend , relative , or neighbor for support or assistance lets the caregiver take a break from the situation . If immediate support is not available , the caregiver could place the baby in a crib ( making sure the baby is safe ) close the door , and check on the baby every five 47 Shaken Bab by the is in the public domain Growth and Development

Figure Medical professionals caring for an Abusive Head Trauma Shaken baby syndrome is part abusive head trauma ( severe form of physical child abuse that results in an injury to the brain of a child . This is important to note because Abusive head trauma is a leading cause of physical child abuse deaths in children under Sin the United States . Abusive head trauma accounts for approximately one third of all child maltreatment deaths . The most common trigger for abusive head trauma is inconsolable crying . Babies less than one year old are at greatest risk of injury from abusive head Teething Although newborns usually have no visible teeth , baby teeth begin to appear generally about months after birth . During the first few years , all 20 baby teeth will push through the gums , and most children will have their full set of these teeth in place by age . An infant front four teeth usually appear first , at about months of age , although some children do get their first tooth until months . As their teeth break through the gums , some infants become fussy , and irritable lose their appetite or drool more than usual . The FDA does not recommend medications with an ingredient called benzocaine because they can cause a potentially fatal condition in young children . Safe forms of relief include a chilled teething ring or gently rubbing the child gums with a clean finger . 48 Image by the Air Force is in the public domain 49 Preventing Abusive Head Trauma in Children by the is in the public domain Growth and Development

Spitting Spitting up is a common occurrence for young infants and is usually not a sign of a more serious problem . But if an infant is not gaining weight or shows other signs of illness , a health care provider should be consulted . Urination Infants urinate as often as every to hours or as infrequently as every to hours . In case of sickness or if the weather is very hot , urine output might drop by half and still be normal . If an infant shows any signs of distress while urinating or if any blood is found in a wet diaper medical care should be sought . Diaper Rash A rash on the skin covered by a diaper is quite common . It is usually caused by irritation of the skin from being in contact with stool and urine . It can get worse during bouts of diarrhea . Diaper rash usually can be prevented by frequent diaper changes . Jaundice Jaundice can cause an infant skin , eyes , and mouth to turn a yellowish color . The yellow color is caused by a buildup of bilirubin , a substance that is produced in the body during the normal process of breaking down old red blood cells and forming new ones . Normally the liver removes bilirubin from the body . But , for many infants , in the first few days after birth , the liver is not yet working at its full power . As a result , the level of bilirubin in the blood gets too high , causing the infant color to become slightly is jaundice . Although jaundice is common and usually not serious , in some cases , high levels of bilirubin could cause brain injury . All infants with jaundice need to be seen by a health care provider . Many infants need no treatment . Their livers start to catch up quickly and begin to remove bilirubin normally , usually within a few days after birth . For some infants , health care providers Image by Colin is licensed under BY Growth and Development

prescribe treatment using a special help break down the bilirubin in their bodies . is Figure infant receiving treatment Protecting Health through Immunization One way we can protect a child health ( and those around them ) is through immunization . The vaccines ( given through injection ) may hurt a but the diseases they can prevent can hurt a lot more ! Immunization shots , or vaccinations , are essential . They protect against things like measles , mumps , rubella , hepatitis , polio , diphtheria , tetanus and pertussis ( whooping cough ) are important for adults as well as for children . Here why . The immune system helps the human body fight germs by producing substances to combat them . Once it does , the immune system remembers the germ and can fight it again . Vaccines contain germs that have been killed or weakened . When given to a healthy person , the vaccine triggers the immune system to respond and thus build immunity . Before vaccines , people became immune only by actually getting a disease and surviving it . are an easier and less risky way to become immune . Vaccines are the best defense we have against serious , preventable , and sometimes deadly contagious diseases . Vaccines are some of the safest medical products available , but like any other medical product , there may be risks . Accurate information about the value of vaccines as well as their possible side effects helps people to make informed decisions about vaccination . 51 Image by Andres and Antoinette Ricardo used with permission Growth and Development

, Figure nurse giving an infant Potential Side Effects Vaccines , like all medical products , may cause side effects in some people . Most ofthese side effects are minor , such as redness or swelling at the injection site . Read further to learn about possible side effects from vaccines . Any vaccine can cause side effects . For the most part these are minor ( for example , a sore arm or fever ) and go away within a few Serious side effects after vaccination , such as severe allergic reaction , are very Remember , vaccines are continually monitored for safety , and like any medication , vaccines can cause side effects . However , a decision not to immunize a child also involves risk and could put the child and others who come into contact with him or her at risk of contracting a potentially deadly disease . How Well Do Vaccines Work ?

Vaccines work really well . No medicine is perfect , of course , but most childhood vaccines produce immunity about of the time . What about the argument made by some people that vaccines do work that well . that diseases would be going away on their own because of better hygiene or sanitation , even if there were no vaccines ?

That simply is true . Certainly better hygiene and sanitation can help prevent the spread of disease , but the germs that cause disease will still be around , and as long as they are they will continue to make people sick . 52 Image by Maria Hospital is licensed under 55 Disease Prevention and Healthy Lifestyles references Contemporary Health Issues by Judy Baker , licensed under Making the Vaccine Decision by the is in the public domain Growth and Development

All vaccines must be licensed ( approved ) by the Food and Drug Administration ( FDA ) before being used in the United States , and a vaccine must go through extensive testing to show that it works and that it is safe before the FDA will approve it . Among these tests are clinical trials , which compare groups of people who get a vaccine with groups of people who get a control . A vaccine is approved only if FDA makes the determination that it is safe and effective for its intended use . If you look at the history of any disease , you will virtually always see that the number of cases of disease starts to drop when a vaccine is licensed . Vaccines are the most effective tool we have to prevent infectious diseases . Opposition to Vaccines In 2010 , a pertussis ( whooping cough ) outbreak in California sickened people and resulted in 10 infant deaths the worst outbreak in 63 years ( Centers for Disease Control ) Researchers , suspecting that the primary cause of the outbreak was the waning strength of pertussis vaccines in older children , recommended a booster vaccination for and also for pregnant women ( 2011 ) Pertussis is most serious for babies one in five needs to be hospitalized , and since they are too young for the vaccine themselves , it is crucial that people around them be immunized ( Centers for Disease Control ) Several states , including California , have been requiring the pertussis booster for older children in recent years with the hope of staving off another outbreak . But what about people who do not want their children to have this vaccine , or any other ?

That question is at the heart of a debate that has been simmering for years . Vaccines are biological preparations that improve immunity against a certain disease . Vaccines have contributed to the eradication and weakening of numerous infectious diseases , including smallpox , polio , mumps , chicken pox , and meningitis . Figure These two young children contracted 55 Image by they is in the public domain Growth and Development

However , many people express concern about potential negative side effects from vaccines . These concerns range from fears about overloading the child immune system to controversial reports about devastating side effects of the Although children continue to get several vaccines up to their second birthday , these vaccines do not overload the immune system . Every day , an infant healthy immune system successfully fights off thousands of antigens parts of germs that cause their immune system to respond . Even if your child receives several vaccines in one day , vaccines contain only a tiny amount of antigens compared to the antigens your baby encounters every day . This is the case even if your child receives combination vaccines . Combination vaccines take two or more vaccines that could be given individually and put them into one shot . Children get the same protection as they do from individual vaccines given with fewer One misapprehension is that the vaccine itself might cause the disease it is supposed to be immunizing Vaccines help develop immunity by imitating an infection , but this imitation infection does not cause illness . Instead it causes the immune system to develop the same response as it does to a real infection so the body can recognize and fight the preventable disease in the future . Sometimes , after getting a vaccine , the imitation infection can cause minor symptoms , such as fever . Such minor symptoms are normal and should be expected as the body builds Another commonly circulated concern is that vaccinations , specifically the vaccine ( stands for measles , mumps , and rubella ) are linked to autism . The autism connection has been particularly controversial . In 1998 , a British physician named Andrew Wakefield published a study in Great Britain Lancet magazine that linked the vaccine to autism . The report received a lot of media attention , resulting in British immunization rates decreasing from 91 percent in 1997 to almost 80 percent by 2003 , accompanied by a subsequent rise in measles cases ( 2008 ) A prolonged investigation by the British Medical Journal proved that not only was the link in the study nonexistent , but that Wakefield had falsified data in order to support his claims ( 2011 ) Wakefield was discredited and stripped of his license , but the doubt still lingers in many parents minds . In the United States , many parents still believe in the now discredited link and refuse to vaccinate their children . Other parents choose not to vaccinate for various reasons like religious or health beliefs . In one instance , a boy whose parents opted not to vaccinate returned home to the after a trip abroad no one yet knew he was infected with measles . Disease Prevention and Healthy Lifestyles references Contemporary Health Issues by Judy Baker , licensed under 57 Making the Vaccine Decision by the is in the public domain 58 Disease Prevention and Healthy Lifestyles references Contemporary Health Issues by Judy Baker , licensed under 59 Making the Vaccine Decision by the is in the public domain Growth and Development

The boy exposed 839 people to the disease and caused 11 additional cases of measles , all in other unvaccinated children , including one infant who had to be hospitalized . Figure A baby with measles According to a study published in Pediatrics ( 2010 ) the outbreak cost the public sector per diagnosed case . The study further showed that the intentional of those infected occurred in students from private schools , public charter schools , and public schools in areas ( et al . 2010 ) The Immunization Schedule vaccination throughout childhood is essential because it helps provide immunity before children are exposed to potentially diseases . Vaccines are tested to ensure that they are safe and effective for children to receive at the recommended Fully vaccinated children in the are protected against sixteen potentially harmful diseases . diseases can be very serious , may require hospitalization , or even be deadly especially in infants and young Image by Global is licensed under BY 20 51 Disease Prevention and Healthy Lifestyles references Contemporary Health Issues by Judy Baker , licensed under 52 For Parents Vaccines for Your Children by the is in the public domain 53 Vaccines for Your Children Protect Your Child at Every Age by the is in the public domain Growth and Development

Here is the schedule from the to ensure a child is fully vaccinated he . urge 2018 Recommended for Children from Birth Through Years Old and misses shot . noun the um max doctor you have About mum on up you am given at an inn apart for mama . aged months . a years slaps are gaming in ( luv me am true and anew mum . um should be against and has any that put ! an for at I . Untied smug run . to your about mum me he may neat Mo doses 04 vaccine are needed io . lasting mu dosed be given and 13 months 91 age The second dose should he gum months are me mu dose may be In any mac months and older to protect Heel . mum and adolescents me am nal um Hem name and are at . Figure Image by the is in the public domain Growth and Development . If 18 months years Hen ! milY rowing . and am ' Varicella Varicella ' run .

Diseases and the Vaccines that Prevent Them Disease Vaccine Disease spread by Disease symptoms Disease complications . is against . in , direct . lever ' I ' Drip . awn A , dim mild fever . weakness , swollen Swelling ol the heart , heart failure . mina , glands in paralysis . death Meningitis ( ol the around the brain and spinal , Air , that can and . ill the lungs ) death A Mum A ' uf , pain ) kidney , yellowing and eyes ) dark urine ' May be no symptoms . level . Hepatitis Heal ?

vaccine protects against hepatitis gnaw weakness , yellowing of ( hI ( liver infection . liver failure . liver ( against , Air , dire ' in extreme Encephalitis ( brain swelling ) pneumonia ( in whooping tough ) protects against measles An , direct . level . runny nose , ME lungs ) ol the ( around the Mumps mumps . tiredness . pain matron of or ovaries , deafness . runny nose . pause in mun breathing in infants ) Polio Pneumococcal protects against polio . Air , the month All , divert May be no symptoms throat , lever . nausea , Paralysis . death May be no pneumonia the . meningitis ine brain and spinal . deem Rubella mine against rubella . Through the Air , duet ! Diarrhea . lever , with virus sometimes , lever , swollen lymph nodes Severe diarrhea , Very serious in ( all lead In . delivery . birth Tetanus Dial . Exposure through rut in skin in ne arid muscle il ill ' i ( lever Broken bones , breathing . aga diphtheria , and pertussis combines against measles . mumps . and , Safety Figure There are different risks to infant safety . According to the , nonfatal injury rates varied by age group . Nonfatal suffocation rates were highest for those less than year of age . Rates for fires or burns , and drowning were highest for children years and younger . Children to years of age had the highest rates of nonfatal falls and poisoning . And the leading causes of injury death also differed by age group . For children less than year of age , of injury deaths were due to suffocation . Drowning was the leading cause of injury or death for those to years of Car Seat Safety Motor vehicle injuries are a leading cause of death among children in the United States . But many of these deaths can be prevented . 55 Image by the is in the public domain Protect the Ones You Love Child Injuries are Preventable by the is in the public domain Growth and Development

Car Seat Safety In the United States , 723 children ages 12 years and younger died as occupants in motor vehicle crashes during 2016 , and more than were injured in 2016 . One study found that , in one year , more than children ages rode in vehicles without the use of a child safety seat or booster seat or a seat belt at least some of the time . Of the children ages 12 years and younger who died in a crash in 2016 ( for which restraint use was known ) 35 were not buckled up . Buckling children in and car seats , booster seats , and seat belts reduces the risk of serious and fatal injuries I Car seat use reduces the risk for injury in a crash by for children when compared to seat belt use alone . Booster seat use reduces the risk for serious injury by 45 for children aged years when compared with seat belt use alone . For older children and adults , seat belt use reduces the risk for death and serious injury by approximately CAR SEAT SEAT BELT Once seat belts fit properly without a booster seat Birth until age 24 Buckle children In a rear facing car seat until they reach the maximum weight or height limit of their car seat Keep children as long as possible BOOSTER SEAT Alter outgrowing facing seat until at least age When children their car seat , they should be buckled a After outgrowing facing seat and until seat belts in properly Once outgrow seat , they should be in a Children no longer need to use a booster sear once seat belts them properly , Seat belts properly when the lap belt lays I car seal until they rem . the maximum weight or car 5231 booster seal seat bells fit properly . Proper seat belt usually occurs when children are reel males all And age across the upper thighs the stomach and the shoulder belt lays across the chest not the 947 . Keep children ages 12 and under properly buckled in the back seat . Never place a car seat in front of an active air bag . Figure 431 different types of car seats based on 57 Child Passenger Safety Get the Facts by the is in the public domain 58 Child Passenger Safety Get the Facts by the is in the public domain 59 Image by the is in the public domain Growth and Development

Sleep A newborn typically sleeps approximately hours per period . This is usually sleep in that the infant is accumulating the hours over several sleep periods throughout the day ( 2005 ) The infant is averaging 15 hours per period by one month , and 14 hours by months . By the time children turn two , they are averaging closer to 10 hours per 24 hours . Additionally , the average newborn will spend close to 50 ofthe sleep time in the Rapid Eye Movement ( REM ) phase , which decreases to 25 to 30 in Sudden Infant Death Syndrome and Safe Sleep Sudden Infant Death Syndrome ( is identified when the death of a healthy infant occurs suddenly and unexpectedly , and medical and forensic investigation findings ( including an autopsy ) are inconclusive . is the leading cause of death in infants to 12 months old , and approximately infants died of in 2013 ( 2015 ) Because is diagnosed when no other cause of death can be determined , possible causes of are regularly researched . One leading hypothesis suggests that infants who die from have abnormalities in the area of the brainstem responsible for regulating breathing ( 2005 ) Figure A baby sleeping safely . Risk Factors Babies are at higher risk for if they Sleep on their stomachs Sleep on soft surfaces , such as an adult mattress , couch , or chair or under soft coverings Sleep on or under soft or loose bedding Get too hot during sleep 70 Lifespan Development A Psychological Perspective by Martha Lally and Suzanne is licensed under 71 Lifespan Development A Psychological Perspective by Martha Lally and Suzanne is licensed under 72 by the Department of Health and Human Services is in the public domain Growth and Development

Sudden Infant Death Syndrome and Safe Sleep Are exposed to cigarette smoke in the womb or in their environment , such as at home , in the car , in the bedroom , or other areas Sleep in an adult bed with parents , other children , or pets this situation is especially dangerous if The adult smokes , has recently had alcohol , or is tired . The baby is covered by a blanket or quilt . The baby sleeps with more than one . The baby is younger than 11 to 14 weeks of age . Reducing the Risks There have been dramatic improvements in reducing baby deaths during sleep since the , when recommendations were introduced to place babies on their back for sleep . However , since the late , declines have slowed . The decline in infant deaths has slowed since the late . VI ' In . Figure A graph showing the decline in infant In 2012 , the Back to Sleep campaign became the Safe to Sleep campaign . Safe to Sleep aims to educate all caregivers about and safe sleep practices . Current recommendations to reduce the risk of and other sleep related causes of infant death Always place baby on his or her back to sleep ( for naps and at night ) Use a firm and flat surface . Use only a tight fitting sheet on the sleep surface no other bedding or soft items in the sleep area . Breastfeed . 73 Image by they is in the public domain Growth and Development

Sudden Infant Death Syndrome and Safe Sleep Share your room with a baby , but on a separate surface designed for infants ( not your bed ) Do not put soft objects , toys , crib bumpers , or loose bedding under , over , or anywhere near baby sleep area . Do no smoke during pregnancy or allow smoking around baby . Consider giving baby a pacifier . Do not let baby get too hot during sleep . Get regular health care ( including vaccines ) Avoid products that go against safe sleep recommendations , especially those that claim to prevent or reduce the risk of . Do not use heart or breathing monitors to reduce the risk of Conclusion In this chapter we looked at Physical changes during the first two years Some common infant reflexes How fine and gross motor skills develop Sensory capacities during the first two years Health and safety for infants and toddlers The sleep needs during the first two years and ways to reduce the risk of In the next chapter we are going to be taking a closer look at theories that help us explain the cognitive and language development during infancy and . 74 Ways to Reduce the Risk of and Other Causes of Infant Death by the is in the public domain Growth and Development