title: Reaction time crossover in schizotypal subjects.
abstract: The present study investigated the relationship between reaction time crossover and schizotypy as measured by Chapman's Physical Anhedonia Scale (PAS). Twenty PAS-identified schizotypal college students and 20 nonschizotypal students were administered a computerized version of Rodnick and Shakow's crossover reaction time task. The hypothesized interaction (crossover) between preparatory interval duration and preparatory interval presentation pattern was observed for PAS-identified schizotypics. Results indicated that subjects identified on the basis of the PAS evidenced reaction time crossover patterns similar to those observed in schizophrenic and at-risk populations.
authors.affiliation: Department of Psychology, College of William and Mary, Williamsburg, Virginia 23187-8795.
authors.forename: H B
authors.initials: HB
authors.lastname: Drewer
authors.forename: G D
authors.initials: GD
authors.lastname: Shean
mesh_terms: D000161:Acoustic Stimulation; D000342:Affective Symptoms / Q000175:diagnosis; D001288:Attention; D001307:Auditory Perception; D006801:Humans; D010555:Personality Inventory; D011597:Psychomotor Performance; D011930:Reaction Time; D012559:Schizophrenia / Q000175:diagnosis; D012565:Schizophrenic Psychology; D012569:Schizotypal Personality Disorder / Q000175:diagnosis* / Q000523:psychology; D014796:Visual Perception