Question 1

Which part of the infant brain is most fully developed at birth and is primarily responsible for basic life functions?

Accepted Answer

Midbrain and medulla

Question 2

What is the process called in which the brain forms new synaptic connections, followed by the elimination of unused pathways?

Accepted Answer

Synaptogenesis and pruning

Question 3

According to dynamic systems theory, which of the following best explains the disappearance of the stepping reflex in infants?

Accepted Answer

It disappears as a result of interaction between genetic factors and environmental variables.

Question 4

Which statement best describes the implications of the synaptogenesis-pruning cycle for early childhood development?

Accepted Answer

Children exposed to more stimuli develop more complex synaptic networks.

Question 5

Which equation best represents the quadrupling of brain weight by age 4, if the initial weight is $W_0$?

Accepted Answer

$W = 4W_0$

Question 6

Which of the following is TRUE regarding myelinization in infancy?

Accepted Answer

It occurs most rapidly in areas responsible for vision and hearing.

Question 7

A neonate displays weak or absent adaptive reflexes. What does this most likely indicate?

Accepted Answer

Improper brain function

Question 8

Which pattern of physical development is observed in infancy?

Accepted Answer

Development proceeds from head downwards.

Question 9

Which of the following best describes the sleep-wakefulness cycle in neonates?

Accepted Answer

Neonates have five sequential states that repeat every 2 hours.

Question 10

Which cultural practice has been shown to promote earlier motor development in African infants?

Accepted Answer

Carrying babies on their backs and massaging muscles

Question 11

If an infant’s primitive reflexes persist past 8 months of age, what might this signal?

Accepted Answer

A neurological problem

Question 12

Which of the following is a consequence of severely restricting a baby’s movement during infancy?

Accepted Answer

Slowed acquisition of motor development

Question 13

Which of the following best describes the process of ossification in infancy?

Accepted Answer

Bones harden and change in size, number, and composition.

Question 14

Which equation best represents the tripling of body weight in the first year, if the initial weight is $W_0$?

Accepted Answer

$W = 3W_0$

Question 15

Which of the following is considered superior nutritionally for most infants according to research?

Accepted Answer

Breastfeeding

Question 16

Which behavioral state in infants is most closely linked to the synchronization of neurological systems with circadian rhythms?

Accepted Answer

Sleep patterns

Question 17

Which of the following best explains why infants’ brains are described as having greater plasticity than those of older children and adults?

Accepted Answer

Infants’ brains can more easily recover from damage due to enriched environments.

Question 18

Which of the following is a correct statement about gender differences in motor development during infancy?

Accepted Answer

Girls are ahead of boys in some aspects, but boys acquire mobility skills faster.

Question 19

Which of the following best describes the reticular formation’s development in infancy?

Accepted Answer

It begins in infancy and continues in spurts through adulthood.

Question 20

A researcher observes that infants exposed to a variety of stimuli show advanced cognitive abilities later in life. Which concept does this finding best illustrate?

Accepted Answer

Plasticity

Physical, Sensory, and Perceptual Development in Infancy: Lifespan Development Chapter 4 Study Notes

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