Which of the following is a validated screening tool for autism spectrum disorder in toddlers?
- A Denver Developmental Screening Test (DDST)
- B Modified Checklist for Autism in Toddlers (M-CHAT) ✓
- C Ages and Stages Questionnaire (ASQ)
- D Bayley Scales of Infant Development
Correct answer: B. Modified Checklist for Autism in Toddlers (M-CHAT)
Explanation
M-CHAT is a parent-completed screening tool specifically designed for autism in 16-30 month olds. DDST screens general development, ASQ screens multiple developmental domains, and the Bayley Scales are a diagnostic assessment, not a screening tool. M-CHAT is the standard autism screening instrument in primary care.
Reference: Nelson Textbook of Pediatrics, 21st ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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