Part 2 G&D:The First Year

Question 1

Myelination begins prenatally at ___wk gestation

Answer 1

30 wks

• The cerebellar white matter acquires myelin by 1 mo of age and is well myelinated by 3 mo of age
• The subcortical white matter of the parietal, posterior frontal, temporal, and calcarine cortex is partially myelinated by 3 mo of age

Question 2

Between 3 and 4 mo of age, the rate of growth slows to approximately __ g/day

Answer 2

20

Question 3

Birthweight is doubled at ___ mos

Answer 3

4

Question 4

Disappearance of the ____________________ reflex means that infants can begin to examine objects in the midline and manipulate them with both hands

Answer 4

asymmetric tonic neck reflex

Question 5

By what age will a baby’s birthweight triple, length increase by 50%, and head circumference increase by 10 cm?

Answer 5

by the first birthday

Question 6

thumb-finger grasp develops by what age?

Answer 6

8-9 mos

Question 7

when does a neat pincer grasp develop?

Answer 7

by 12 mos

Question 8

The ability to sit unsupported usually develops at what age?

Answer 8

6-7 mos

Question 9

The ability to pivot while sitting develops at what age?

Answer 9

around 9-10 mos

Question 10

Object permanence is achieved at what age?

Answer 10

9 mos

Question 11

What emotional development usually occurs with the advent of object permanence?

Answer 11

stranger anxiety