Which developmental outcome is a concern for infants and toddlers who experience prolonged immobility?

• A. Earlier independent walking
• B. Accelerated cognitive milestones
• C. Delayed independence and gross motor skills development
• D. Increased social engagement

Answer: (C)

Movement is essential for infants to develop gross motor skills and gain independence. When a child experiences prolonged immobility, muscles weaken, joints become stiffer, and bones receive less weight-bearing stimulus, all of which slow the practice and mastery of motor milestones. Because rolling, sitting, crawling, standing, and walking depend on strength, coordination, and safe opportunities to explore, immobility leads to delays in these skills and, consequently, in achieving independence in daily activities. Cognitive development can be affected indirectly through reduced exploration and interaction, but the most pronounced concern with extended immobility is the lag in gross motor development. The idea that walking would occur earlier or that cognitive milestones would speed up isn’t consistent with how lack of movement restricts physical practice and opportunity. Increased social engagement is also unlikely when movement is limited, since mobility typically expands participation with peers and activities. In practice, interventions focus on promoting safe movement within limits, frequent range-of-motion activities, and collaboration with physical therapy to prevent or minimize delays.