Response inhibition and impulsivity in schizophrenia.

Response inhibition in schizophrenia remains controversial, with behavioral correlates largely unknown. Inpatients with schizophrenia and controls completed a stop task and an impulsiveness questionnaire. Slower inhibitory processes were evident in schizophrenia, but there was no association with impulsivity. The nature of inhibition and impulsivity in schizophrenia is complex, and could reflect schizophrenia subgroups or disease states.