title: Formal operations in reactive and process schizophrenics.
mesh_terms: D000328:Adult; D002657:Child Development; D003071:Cognition; D005069:Evaluation Studies as Topic; D006801:Humans; D008297:Male; D008875:Middle Aged; D011581:Psychological Tests; D011582:Psychological Theory; D012559:Schizophrenia / Q000145:classification / Q000175:diagnosis*; D012565:Schizophrenic Psychology