The APA defines schizophrenia by the presence of two or more of the following, each present for a significant portion of time during a one-month period: (1)Â Â delusions (2)Â Â hallucinations (3)Â Â disorganized speech (4)Â Â grossly disorganized or catatonic behavior (5)Â Â negative symptoms i.e. affective flattening, alogia or avolition Signs of the disturbance must have been [...]


