Negative Syndrome Scale

The Negative Syndrome Scale (NSS) is a rating scale used to assess the severity of negative symptoms in individuals with schizophrenia. Negative symptoms refer to the absence or reduction of normal behaviors or experiences, such as lack of motivation, social withdrawal, and reduced emotional expression. The NSS is one of several rating scales used in clinical research and practice to assess the severity of negative symptoms and track changes over time. It is a tool used by healthcare professionals to help diagnose and manage mental health conditions.