Chapter 9 - Biosocial Preschool Flashcards
(107 cards)
The development in early childhood is influenced by the same epigenetic factors that were influential in infancy:
- Biologically driven: experience-expectant
- Socially guided: experience-dependent
Between the ages of 2 and 6, children grow steadily ___ and gradually ___
taller, slimmer
Radical change in the proportion between ages 2 and 6: lower body gets ___ and fat turns to ___.
Center of gravity ___ => enabling swinging, gymnastics etc.
longer, muscle
lowers
BMI (body mass index) lower at - years than any other time.
5-6
New shape & abilities occur as weight and height increases: Posture and balance improve, resulting in gains in ___ coordination.
motor
A typical child gains . cm in height & about _ kg in weight each year.
7.5 cm, 2 kg
By the end of the preschool years, a typical 6 year old Is at least __ cm and weighs between _ and _ kg. Has ___ like body proportions (legs constitute about half the total height).
106 cm, 18 and 22 kg
adult
A typical 6 year old starts to lose their ___ ____ during this period.
primary teeth
What does it mean to say physical growth is an asynchronous process?
Different body systems have their own timed patterns of maturation.
Biosocial factors: entailing the interaction or combination of social and biological factors.
Genetic background (e.g., ethnicity) Health care
Nutrition
SES
Individual differences within ethnic groups _ individual differences across ethnic groups
>
The quality and the quantity of nutrition is important for:
Bodily growth
Brain growth
Building an immune system
Growth is ___ during early childhood, children need ___ calories per kilogram of body weight; consequently, their appetites are smaller.
slower, fewer
Low income correlated with _____
malnourishment
Overfeeding of children or low quality feeding is the major cause of the global epidemic of adult heart disease and ___.
diabetes
A common problem among American families of all social classes is children’s overindulgence in sweets, which spoil their appetite for good foods and cause ___ ____
tooth decay
harms permanent teeth
jaw malformation which might affect speech and overall health.
During childhood, the ___ develops faster than any other part of the body.
brain
Between ages 2 and 6, the brain grows from __ percent to __ percent of its adult weight.
75, 90
Myelination
process that insulates the axons of neurons and speeds transmission of neural impulses
Myelination enables the child to think and react much ___ than the toddler can.
quicker
What accounts for this rapid brain growth?
Rapid increase in new communication pathways.
Coordination of sensory perception, thoughts and actions.
Information-processing capacity is developin
Lateralization
The specialization of the two sides of the body and brain is called lateralization (prompted by genes, prenatal hormones, and early experiences).
Left hemisphere -
Language: around 2 yrs.
Right hemisphere -
Recognition of visual shapes: 4- 5 yrs.
All thinking requires ___ sides of the brain!
both
At about the age of 5, children show important gains as a result of growth and myelination in the ____ ____, a band of nerve fibers connecting the right & left hemispheres of the brain.
corpus callosum