A medical student is reviewing developmental screening tools used during routine well-child preventive care visits. To correctly administer screening questionnaires and identify potential delays, the student must know the normal progression of infant and toddler development. Arrange the following fine motor milestones in the chronological order in which they are typically achieved by a healthy neurotypical child, from earliest to latest.
- 1Brings both hands together at the midline
- 2Transfers an object from one hand to the other
- 3Demonstrates a mature pincer grasp (thumb and index finger)
- 4Builds a vertical tower of six consecutive cubes
- 5Successfully copies a drawn circle
Answer
The correct chronological order is: Brings both hands together at the midline (3-4 months), Transfers an object from one hand to the other (6 months), Demonstrates a mature pincer grasp (10-12 months), Builds a vertical tower of six consecutive cubes (24 months), and Successfully copies a drawn circle (36 months).
The normal chronological progression of these fine motor milestones reflects the proximal-to-distal development of the pediatric nervous system. An infant first establishes shoulder and arm control to bring hands to the midline (3-4 months). Next, they learn to transfer objects between hands (6 months). By 10-12 months, the infant develops a mature pincer grasp for small objects. Complex multi-step tasks like building a tower of six cubes are achieved at 24 months, and advanced visual-motor integration skills like copying a circle emerge at 36 months.
Step-by-Step Solution
Key Concept
The chronological sequence of fine motor milestones during pediatric well-child developmental screening.
Estimated Time:1m 0s