PCS PCS Developmental Milestones and Neurodevelopment

Question 1

At what age do most typically developing children begin to walk independently?

Accepted Answer

12–15 months

Answer

Most children take their first independent steps between 12 and 15 months of age.

Question 2

Which reflex, present at birth, involves turning the head toward a stimulus that touches the cheek?

Accepted Answer

Rooting reflex

Answer

The rooting reflex causes a newborn to turn toward a tactile stimulus on the cheek, facilitating feeding.

Question 3

Synaptic pruning in the developing brain primarily occurs during which periods?

Accepted Answer

Infancy and early childhood, then again in adolescence

Answer

Synaptic pruning occurs in two major waves: early childhood (sensory/motor cortices) and adolescence (prefrontal cortex).

Question 4

A 4-month-old infant who does not demonstrate social smiling may indicate concern for which of the following?

Accepted Answer

Developmental delay or autism spectrum disorder

Answer

Social smiling typically emerges by 2 months; absence at 4 months warrants further developmental screening.

Question 5

Which area of the brain is most responsible for regulating balance and coordination in children?

Accepted Answer

Cerebellum

Answer

The cerebellum coordinates voluntary movement, balance, and fine motor control.

PCS - Pediatric Certified Specialist Practice Test