Q1.A 5-year-old speaks freely at home and with her sibling but has not spoken at preschool for 4 months. Language testing at home shows age-appropriate skills. The most likely diagnosis is:
- A.Developmental language disorder
- B.Selective mutism
- C.Autism spectrum disorder
- D.Auditory processing disorder
Show answer & rationale
Correct: B. Consistent failure to speak in specific social settings despite normal speech in comfortable settings is the hallmark of selective mutism, an anxiety disorder — not a language disorder.