Final answer:
Positive symptoms of schizophrenia are characterized by a distortion or excess of normal function, while negative symptoms involve social withdrawal and loss of normal functions.
Step-by-step explanation:
The positive symptoms of schizophrenia are marked by a distortion or an excess of normal function, whereas the negative symptoms reflect social withdrawal, behavioral deficits, and the loss or decrease of normal functions.
Positive symptoms include hallucinations, delusions, and inappropriate emotional responses, while negative symptoms include a flattened emotional state, loss of pleasure, and loss of basic drives.