title: Comparison of scoring methods for tests of attention, including an error index for use with schizophrenic patients.
abstract: A resume is given of various doubts raised concerning the application of signal-detection theory to discrimination tasks involving 'supra-threshold' stimuli, as in tests of vigilance and selective attention. The validity of this theory in pathological conditions, such as schizophrenia, is also questioned. The continuing need for a unitary index combining errors or omission and commission is emphasized and the various indices so far proposed are compared using experimental data. A new Error Index is offered as a more satisfactory resolution.
mesh_terms: D001288:Attention; D002746:Chlorpromazine / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D010919:Placebos; D011594:Psychometrics; D012559:Schizophrenia / Q000175:diagnosis / Q000188:drug therapy; D012565:Schizophrenic Psychology; D014796:Visual Perception
chemical_list: D010919:Placebos; D002746:Chlorpromazine