Q: Which of the following equations best represents the typical weight gain of an infant in the first year of life?

$$W_{1yr} = 3 \times W_{birth}$$

Question 1

Which of the following best describes synaptogenesis during infancy?

Accepted Answer

The creation of new synaptic connections between neurons, followed by pruning to increase efficiency.

Question 2

A researcher observes that a 2-month-old infant can lift their head slightly when placed on their stomach. This is an example of which type of motor development?

Accepted Answer

Gross motor development

Question 3

Which reflex is characterized by an infant arching their back and flinging out their arms and legs in response to a sudden noise or loss of support, and typically disappears after 4 months?

Accepted Answer

Moro reflex

Question 4

A baby is born at 35 weeks gestation and weighs 2400 grams. According to the definitions in developmental psychology, how would this infant be classified?

Accepted Answer

Preterm and low birth weight

Question 5

Which of the following statements about neuroplasticity in infancy is correct?

Accepted Answer

Neuroplasticity is the ability of the brain to reorganize neural pathways and connections.

Question 6

Which of the following best explains why prompt attention to crying in the first few months leads to less crying later?

Accepted Answer

It helps infants develop trust and reduces their need to cry for attention.

Question 7

Which sensory ability is the most developed at birth?

Accepted Answer

Touch and motion

Question 8

An infant is able to distinguish between two-syllable words at 6 months of age. This ability is an example of:

Accepted Answer

Speech sound discrimination

Question 9

Which of the following equations best represents the typical weight gain of an infant in the first year of life?

Accepted Answer

$$W_{1yr} = 3 	imes W_{birth}$$

Question 10

Which of the following is a correct statement about the development of depth perception in infants?

Accepted Answer

Binocular cues begin to be used around 4 months of age.

Question 11

A 10-month-old infant pulls themselves up and walks while holding onto furniture. This is an example of which type of motor skill?

Accepted Answer

Locomotor skill

Question 12

Which of the following best describes the process of myelinization?

Accepted Answer

The gradual covering and electrical insulation of axons to improve nerve transmission.

Question 13

Which of the following is a primitive reflex that disappears by about 12 months of age and is characterized by the fanning out of an infant's toes when the sole of the foot is stroked?

Accepted Answer

Babinski reflex

Question 14

Which of the following statements about infant mortality in Canada is correct?

Accepted Answer

Sudden Infant Death Syndrome (SIDS) accounts for a significant proportion of infant deaths.

Question 15

Which of the following best explains why infants with visual limitations (such as cataracts) may have problems identifying faces later in life?

Accepted Answer

They miss critical periods of early visual stimulation necessary for face perception.

Question 16

Which of the following is an example of a fine motor skill in infancy?

Accepted Answer

Using hands and fingers to grasp objects

Question 17

A 6-month-old baby is able to sleep for 13 hours per day and has established clear nighttime and daytime sleep patterns. This is an example of:

Accepted Answer

States of consciousness

Question 18

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

Accepted Answer

The process by which bones harden through puberty.

Question 19

Which of the following is a correct statement about the development of crying in infants?

Accepted Answer

Crying peaks around 6 weeks and then tapers off.

Question 20

Which of the following best describes the 'looking technique' used in infant research?

Accepted Answer

Measuring the amount of time an infant spends looking at a stimulus to infer interest or recognition.

Physical, Sensory, and Perceptual Development in Infancy

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