Infancy (birth To 18/24m) Flashcards
Cephaloacude Patterns
Head (cephalo) to tail (caudal)
head occupies a huge proportion of the newborns body (grow head down) * Physical growth and feature differentiation work their way from top to bottom * Same patterns occurs within the head area * Top parts of the head ( eyes and brain) grow faster than the lower parts of the head * Infants see objects before they can control their torso and can use their hand long bf hey can crawl or walk
Proximodistal Pattttern
Near to Far
growth starts at the denture of the body and moves toward the extremities
* Infants control the muscles of their trunk and arms bf they control their hands, and they use their whole hands bf they can control their fingers
* Exceptions to this patters
Touch w feet bf they use there hands
The Brain
app 2y age - brain is about 75% of adult brain weight
* Extensive brain development from birth through infancy
* Interactions with environment and individual neurons from connections lowing perception, language, and complex through
Neuron
Nerve cels that handles info processing. It sends electrical and chemical signals communication w each other
Among vs Dendrites
A = carry singles away from cell
D = Carry’s signal towards cells
Neutotasmitters
Terminal button at the end of Alton with releases chemical into synapse (gap between neuron’s) allowing info to pass
Lateralization
Function specialization in one hemisphere of the cerebral cortex or other other.
- starts before brith
- newborns greater electrical brain activity in left hemisphere then right when listening to speech
Sleep
- the World Health Organization (WHO) recommends that infants 0-3m of age get 14-17h or good quality sleep daily
- Many parents express concern abt their baby’s sleep patterns
- Cultural expectations of sleep differ
- Infants not only sleep more but also spend much greater amount of time in REM (rapid eye movement) sleep
- Self stimulation
- Promote the brains development and learning in infancy
Sleep and Cognitive Development
Short sleep durations during infancy have been linked to a lower level of cognitive and language development at 2y of age and to inattenstiveness and hyperactivity at 5y of age
* link between sleep and cognitive development
* role of sleep in brain maturation and memory consolidation; which may improve daytime alterness and learning
Nutrition
First 4-6m human milk or formula is all baby’s source or nutrients and energy
Breast Feedingbenifits
benefits of breast feeding include appropriate weight gain and reduce risk of of child and adult obesity, reduce risk of sudden infants death (SIDS), fewer gastrointestinal infections and lower respitract infections
- New research shows this is not supported
- There r circumstances when mothers should not breast feed
Motor Development
Not born completely helpless; ie born in water knows to hold breath or head will turn when check is stroked to see what is might be as well as know how to suck bf knowing that there food comes from a nipple. These reflexes adapt to increases there likelihood of survival
Reflexes
newborns have range of reflexes, reactions t stimuli that govern their movements
* Reflexes allow infants to respond adaptively to their environment bf they have had the
Rooting Reflex
infants cheek is stroked or the side of the mouth is touched, infant turns head toward that side in an apparent effort to find something to suck
Gross motor Skills
Large muscle activities
4 important skills for infants to develop w practice
- Rolling over
2. Sitting without support
3. Crawling
4. Walking
Fine Motor Skills
Finely tuned movement like grasping a toy or using a spoon anything that require finger dexterity
- during first 2y of life infantry rely on FMS like crawling, holding objects, clapping, or walking
Cross Cultural Differences
- influenced by rent beliefs and practice
- Different across country’s / cultures
- Important to examine HD in divers cultures
- Nurture plays a role
Motor development does not reflect the simple unfolding of genetic plans
Sensation
when info interacts w sensory receptors (sense: eye / ears / tongue / nose / skin)
Perception
interpretation of sense
* Infants have visual preferences; tend to look at patterned object (ie faces) less colour interest
Ecological view
Emphasizes that perception is designed for action
Vision
Visual experience begins at birth = newborn have 20/600
* visual acuity improves rapidly during first year of life and by 6m and average infants vision is 20/40
depth Perception
Infants bc mobile; there is clear adaptive value to perceiving depth. Babies must avoid crawling or walking over edges (Visual cliff experiment - LOOK
Hearing
Auditory experience being during last 2m of pregnancy
* right after birth; infants cannot hear soft sound as well stimulus must be louder for a newborn to hear
* Infants less sensitive to difference in pitch of a sound (age 2 = improvement)
Intermdodal Perception
Integrating info from 2 or more sensory modalities
Adaption
Adjusting to new environments where infants and children build schemes to organize knowledge using to processes 1. Assimilation 2. Acccomodation
Assimilation vs. Accommodation
As = children use their existing schemes to deal w new info
Ac = children adjust schemes to account fore new info and experiences
Sensorimotor stage
Birth to 2y of age
Infants construct an understanding of the world by coordinating sensory expiences 9such as seeing and hearing) w physical, motor actions
Object Permanence
= the understanding that object continue to exist even when they cannot be seen, heard, or touched (develops 8/9m of age)
Core Knowlege Approache
Infants r born w domain specific innate knowledge systems
- space, number sense, object permanence and language
- The innate core knowledge domains from a foundation around which more mature congnitive functioning and learning develop
- Argues that Piaget greatly underestimated cognitive abilities of infants
Conditioning
Infants behavior is followed by a reward so behaviour is likely recurring
Attention
Focusing mental resource on select info improves cognitive preocessing on many tasks
Joint Attention
Two individual focus on same object or event
Imitation
Potentially bioical bases as infant can imitate a facial expression within a few days of life
Memory
6m can remember information for 24hr vs 20m can remember inf for 12m earlier
Implicit Memory
nondeclative = memory without conscious rcoection (skills or routines)