Which of the following is not a sign and symptom category for schizophrenia?

A) Behavioral symptoms
B) Cognitive symptoms
C) Negative symptoms
D) Positive symptoms

Behavioral symptoms are not categorized as a separate sign and symptom category for schizophrenia. Instead, schizophrenia is typically characterized by cognitive symptoms, negative symptoms, and positive symptoms. Behavioral changes can occur as a result of these symptoms but are not a distinct category on their own.