Negative Symptom Assessment-16 Clinical Classification

**Semantic type:** Intellectual Product

**Definition:** A standardized rating scale developed by Axelrod et al in 1993, which is a classification system used to assess the presence, severity, and various negative symptoms associated with schizophrenia. This instrument contains 16 items and the characterization of negative symptoms is based on a 5-factor model: communication, emotion/affect, social involvement, motivation, and retardation.

**Synonyms:** - NSA-16 - NSA-16 - NSA01