Performed within 24-36 hours after birth (suitable for infants up to two months)
Evaluates neurological development, reflexes and reactions to people
Not routinely done
Low birth weight categories
low birth weight < 5.5 lbs.
very low birth weight < 3.5 lbs
extremely low birth weight < 2 lbs
What are the risk factors for low birth weight?
Demographic: African American ethnicity, young or old age, poverty, marital status and lack of education
Medical: First child or having more than four, being short or think, previous low birth weight or miscarriages, low birth wieght oneself, genital abnormalities, hypertension
Behavioral and Environment: Poor nutrition, inadequate prenatal care, smoking, use of alcohol or drug use, exposure to high altitude or toxic substances
What are the immediate danger of low birth weight? What are the treatments?
Immature immune system
Immature nervous system
Inability to regulate body temperature
Isolette and Massage
How does massage help low birth weight infants?
Infants are more active
Better cognitive development
What are the outcomes for low birth weight infants at school age?
Learning disabilities
ADHD
Asthma
Enrollment in special education programs
What are the outcomes for low birth weight infants at teens age?
Lower cognitive skills
Weaker academic records
More behavioral problems
How do infants grow and develop? Which two direction?
Cephalocaudal - top down
Proximodistal - inside out
Weight and Height growth
lose weight 1st several days
gains 5-6 oz 1st month
double in 4 months
weight triple by 1st birthday
height 1.5x by 1st birthday
What is the process of neurotransmission?
1. synthesis of neurotransmitter and formation of vesicles
2. transpoort of neurotransmitter down axon
3. Action potential travels down the axon
4. Action potential causes calcium to enter, evoking release of neutransmitter
5. Neutransmitter attaches to receptor exciting or inhibiting postsynaptic neuron
6. Separation of neutransmitter molecules from receptors
7. Reuptake of neurotransmitters to be recycled
How does neurons change physically?
Increase in dendrites and synapses
Myelination
Pruning
Visual - rapidly after birth - 6 months
Hearing - 4-5 years
Frontal - teens
Reflexes
27 basic reflex
Brain development: Critical role of experience
Enriched environments positively affected brain development in both young and old
Infants' Sensory and Perceptual devopment
Hearing
Tactile
Smell and Taste
Sight
Can the fetus hear?
Yes!
More active when born compare to those who weren't read to
Hearing in fnfancy
Newborns recognize their mother's voice
Gradually increase ability to hear soft sounds
Keen ability to distinguish subtle phonetic differencesImproved in 2 years
Borned with capacity to learn any language
Last 2nd half of 1st year
Do infants feel touch and pain?
Yes!
connect info from touch with visual
Infant's Smell and Taste
Smell and taste develop in the womb
Infants prefer mother's scent
Infants prefer sweet taste
Differentiate odor
Understand in 6 days
4 months prefer salty to sweet
Infants sight
Newborns 20/400
6 months: 20/100
1 year: 20/20
Birth: Red-green
2 months: all colors
Depth perception dependent on experience
Infant's gross motor development
Just need pratice
When physically ready, will develop
Denver Developmental Screening Test
Screening test
1 month to 6 years
Asssesses gross and fine motor skills, language, and social development
Does the Denver Devlopmental Screening Test work in other cultures?
No, does not apply to other cultures
Does a 2 y/o have depth perception?
Yes!
Cultural influences in motor devlopment
depends on the pace of the culture
African and West Indian cultures actively encourage early motor strenght
Other cultures discourage...
Summary Physical Development: First Three Years
Fetus to Newborn
The Newborn (assessment, low birth-wight) - 10 pts
Physical growth
Brain and Reflexes - brain not fully develop after birth