Pediatric Nursing: Growth & Development Milestones Practice Pack
2026 |Chamberlain College
1. By what age should the posterior fontanel be closed?
A. 2 to 4 weeks
B. 12 to 18 months
C. 4 to 6 months
D. 6 to 8 weeks
Answer: D
Rationale: The posterior fontanel typically closes by 6 to 8 weeks of age, while the anterior
fontanel closes between 12 and 18 months.
2. An infant’s birth weight is expected to double by which month?
A. 12 months
B. 4 months
C. 9 months
D. 6 months
Answer: D
Rationale: A general rule of thumb for infant growth is that the birth weight doubles by 6
months and triples by 12 months.
,3. At what age does a refined pincer grasp typically develop?
A. 5 months
B. 7 months
C. 10 months
D. 15 months
Answer: C
Rationale: A crude pincer grasp appears around 8-9 months, but a refined pincer grasp is
usually established by 10 months.
4. The Moro reflex (startle reflex) should disappear by which age?
A. 1 month
B. 4 months
C. 12 months
D. 8 months
Answer: B
Rationale: The Moro reflex normally disappears by 3 to 4 months of age as the
neurological system matures.
5. At what age can an infant usually sit unsupported?
A. 4 months
B. 2 months
C. 12 months
D. 8 months
Answer: D
Rationale: Infants generally develop the core strength to sit unsupported between 7 and 8
months of age.
, 6. According to Piaget, which concept is developed when an infant understands
that an object exists even when out of sight?
A. Egocentrism
B. Conservation
C. Object permanence
D. Animism
Answer: C
Rationale: Object permanence is a major achievement of the sensorimotor stage, typically
occurring between 9 and 12 months.
7. Which Erikson stage of psychosocial development applies to an infant from
birth to 1 year?
A. Autonomy vs. Shame and Doubt
B. Initiative vs. Guilt
C. Industry vs. Inferiority
D. Trust vs. Mistrust
Answer: D
Rationale: Trust vs. Mistrust is the primary psychosocial task for infants as they depend on
caregivers for basic needs.
8. Whole cow’s milk should not be introduced until which age?
A. 12 months
B. 6 months
C. 18 months
D. 24 months
Answer: A
Rationale: Cow’s milk is deficient in iron and can cause intestinal bleeding in infants under
12 months of age.
2026 |Chamberlain College
1. By what age should the posterior fontanel be closed?
A. 2 to 4 weeks
B. 12 to 18 months
C. 4 to 6 months
D. 6 to 8 weeks
Answer: D
Rationale: The posterior fontanel typically closes by 6 to 8 weeks of age, while the anterior
fontanel closes between 12 and 18 months.
2. An infant’s birth weight is expected to double by which month?
A. 12 months
B. 4 months
C. 9 months
D. 6 months
Answer: D
Rationale: A general rule of thumb for infant growth is that the birth weight doubles by 6
months and triples by 12 months.
,3. At what age does a refined pincer grasp typically develop?
A. 5 months
B. 7 months
C. 10 months
D. 15 months
Answer: C
Rationale: A crude pincer grasp appears around 8-9 months, but a refined pincer grasp is
usually established by 10 months.
4. The Moro reflex (startle reflex) should disappear by which age?
A. 1 month
B. 4 months
C. 12 months
D. 8 months
Answer: B
Rationale: The Moro reflex normally disappears by 3 to 4 months of age as the
neurological system matures.
5. At what age can an infant usually sit unsupported?
A. 4 months
B. 2 months
C. 12 months
D. 8 months
Answer: D
Rationale: Infants generally develop the core strength to sit unsupported between 7 and 8
months of age.
, 6. According to Piaget, which concept is developed when an infant understands
that an object exists even when out of sight?
A. Egocentrism
B. Conservation
C. Object permanence
D. Animism
Answer: C
Rationale: Object permanence is a major achievement of the sensorimotor stage, typically
occurring between 9 and 12 months.
7. Which Erikson stage of psychosocial development applies to an infant from
birth to 1 year?
A. Autonomy vs. Shame and Doubt
B. Initiative vs. Guilt
C. Industry vs. Inferiority
D. Trust vs. Mistrust
Answer: D
Rationale: Trust vs. Mistrust is the primary psychosocial task for infants as they depend on
caregivers for basic needs.
8. Whole cow’s milk should not be introduced until which age?
A. 12 months
B. 6 months
C. 18 months
D. 24 months
Answer: A
Rationale: Cow’s milk is deficient in iron and can cause intestinal bleeding in infants under
12 months of age.
