A medical student is preparing for a pediatric clinical rotation and is reviewing standard developmental milestones. Match each constellation of gross motor, fine motor, language, and social achievements to the chronological age at which they are typically expected in a healthy child.
- Cruises along furniture, uses a mature pincer grasp, points to objects to share interest, and says 'mama' and 'dada' specifically.12 months
- Walks up stairs with both feet on each step, builds a tower of 6 cubes, speaks in 2-word phrases, and engages in parallel play.24 months (2 years)
- Alternates feet when going up stairs, rides a tricycle, copies a circle, and speaks in 3-word sentences.36 months (3 years)
- Hops on one foot, copies a cross, names colors, and engages in cooperative play with peers.48 months (4 years)
Answer
The milestones should be matched as follows: Cruising/pincer grasp to 12 months; two-feet-per-step/6-cube tower to 24 months; alternating feet/tricycle riding to 36 months; and hopping/copying a cross to 48 months.
Each age threshold features classic developmental anchors. The 12-month-old achieves early mobility and specific parent recognition. The 2-year-old demonstrates the 'rule of 2s' (2-word phrases). The 3-year-old demonstrates the 'rule of 3s' (tricycle, 3-word sentences). The 4-year-old demonstrates advanced balance (hopping) and higher-level shapes (cross).
Step-by-Step Solution
Key Concept
Normal pediatric developmental milestones across motor, fine motor, language, and social domains
Estimated Time:1m 0s