In Autism Spectrum Disorder (ASD), which core diagnostic feature was ADDED in DSM-5 that was NOT a separate domain in DSM-IV autism criteria?

• A Restricted, repetitive patterns of behaviour, interests, or activities
• B Deficits in social communication and social interaction across multiple contexts (unified as a single domain)
• C Sensory hyperreactivity or hyporeactivity to sensory input ✓
• D Language delay as a separate diagnostic criterion

Explanation

DSM-IV autism had three domains: social impairment, communication impairment, and restricted/repetitive behaviours. DSM-5 collapsed these into two domains: (1) Social communication/interaction deficits; (2) Restricted, repetitive behaviours. Within the second domain, DSM-5 specifically ADDED sensory abnormalities (hyper/hyporeactivity to sensory input) as a new criterion under restricted/repetitive behaviours — this was not explicitly listed in DSM-IV. Language delay is no longer a diagnostic criterion in DSM-5 ASD (it is noted as a specifier). Social communication is now a unified domain.

Reference: Kaplan & Sadock's Synopsis of Psychiatry, 11th ed.

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Written and medically reviewed by the StethoPrep medical team.