You wish to administer a validated, parent-reported screening questionnaire for autism spectrum disorder at the routine 18-month well-child visit. Which instrument is designed for this purpose?
- A Modified Checklist for Autism in Toddlers, Revised (M-CHAT-R/F) ✓
- B Denver Developmental Screening Test II
- C Vineland Adaptive Behavior Scales
- D Bayley Scales of Infant Development
Correct answer: A. Modified Checklist for Autism in Toddlers, Revised (M-CHAT-R/F)
Explanation
The M-CHAT-R with Follow-up interview is a 20-item yes/no parent-report screener validated for autism risk at 16 to 30 months, recommended at the 18 and 24 month visits. The Denver II screens across all developmental domains but is not autism-specific. Vineland measures adaptive functioning and Bayley provides a detailed diagnostic assessment of development; both are evaluation tools, not brief screening instruments for autism risk.
Reference: Nelson Textbook of Pediatrics, 21st ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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