An 18-month-old child has a developmental quotient (DQ) of 60. Using the formula DQ = (developmental age / chronological age) × 100, which developmental age corresponds to this DQ?

• A 6 months
• B 9 months
• C 10.8 months ✓
• D 12 months

Explanation

DQ = (developmental age / chronological age) × 100. Rearranging: developmental age = (DQ × chronological age) / 100 = (60 × 18) / 100 = 10.8 months. A DQ of 60 indicates significant developmental delay, consistent with moderate intellectual disability range, and warrants comprehensive evaluation and early intervention referral.

Reference: Developmental-Behavioral Pediatrics, 1st ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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