100+ Free CMSA Cert Dev Paed(SA) Practice Questions

Explanation: Sitting without support emerges around 6-7 months and is well established by 9 months. Hand-to-hand transfer occurs around 6-7 months. Raking grasp (using all fingers together) is typical for 7-8 months; a neat pincer grasp normally develops between 9 and 12 months. Multisyllabic babbling and stranger anxiety are typical 6-9 month milestones. Thus, gross motor and language are age-appropriate, while fine motor shows a slight lag if a neat pincer grasp has not yet begun to emerge, though raking is still acceptable at 9 months.

Explanation: The asymmetric tonic neck reflex (ATNR) is present at birth, peaks around 2 months, and normally obligatorily disappears by 4 to 6 months as cortical inhibition matures. Persistence of an obligatory ATNR beyond 6 months is a major red flag for upper motor neuron damage (spastic cerebral palsy), as it prevents midline hand play, rolling, and voluntary motor control.

Explanation: Proto-declarative pointing (pointing to share interest or enjoyment with another person) and showing objects normally emerge between 9 and 14 months and are key markers of joint attention. Absence of proto-declarative pointing by 18 months is a prominent early red flag for Autism Spectrum Disorder (ASD), even if proto-imperative (requesting) pointing is present.

Explanation: The developmental sequence for copying shapes is: vertical/horizontal line (2 years), circle (3 years), cross '+' (4 years), square (4.5 years), diagonals/X (5 years), and triangle (5 years). This sequence reflects visual-motor integration and parietal-frontal cortical maturation.

Explanation: Protective postural reactions develop in a strict chronological order: forward protective extension (parachute) appears at 6-7 months, sideways protective extension at 7-8 months, and backward protective extension at 9-10 months. Downward protective extension appears at 4-5 months.

Explanation: The clinical rule of thumb for speech intelligibility to unfamiliar listeners is: age in years divided by 4 (or 50% at 2 years, 75% at 3 years, and 100% at 4 years). A 2-year-old whose speech is only 25% intelligible and who lacks 2-word spontaneous phrases meets criteria for expressive speech delay.

Explanation: The ASQ-3 is a parent-completed developmental screening tool covering 5 domains from 1 to 66 months. It is widely used in primary care and resource-limited settings because of its low cost, ease of completion, and high sensitivity and specificity.

Explanation: Full term is considered 40 weeks. An infant born at 28 weeks is 12 weeks (3 months) premature. Standard paediatric guidelines recommend correcting developmental milestone expectations for prematurity until 24 months of chronological age (or up to 36 months for extreme prematurity/severe motor delay).

Explanation: The clinical picture—inability to pull to stand at 15 months, retained primitive reflexes (Moro, palmar grasp beyond 6 months), upper motor neuron signs (hyperreflexia, clonus, scissoring posture)—is diagnostic of spastic diplegic cerebral palsy.

Explanation: The Griffiths III consists of 5 subscales: Foundations of Learning (assesses cognitive planning, problem-solving, memory, and spatial reasoning), Language and Communication, Eye and Hand Coordination, Personal-Social-Emotional, and Gross Motor.