How many groups of signs and symptoms does schizophrenia have?

A) 2
B) 3
C) 4
D) 5

Schizophrenia has three groups of signs and symptoms: positive, negative, and cognitive. Positive symptoms include delusions, hallucinations, and disordered thinking. Negative symptoms include lack of motivation, emotional expression, and social functioning. Cognitive symptoms include problems with memory, attention, and decision-making.