title: Retest reliability of the Halstead Impairment Index in a normal, a schizophrenic, and two samples of organic patients.
abstract: In a 1974 study Matarazzo, et al. reported the test-retest reliability of the Halstead-Reitan Neuropsychological Battery for a sample of normal young men and a comparison group of older Ss with cerebrovascular disease. The present study extended this earlier one by addition of comparable test-retest findings from two additional comparison groups: a sample of chronic schizophrenic Ss and a sample of organic patients who underwent endarterectomy. Despite the lack of comparability across the four samples on many dimensions, including age and test-retest interval, the results again reveal a high degree of clinical as well as purely psychometric reliability for most of the tests in the neuropsychological battery and the additional suggestion for further research that the test-retest instability found for some of the Ss in the schizophrenic sample may, itself, hold promise of differential clinical significance in the diagnosis of a "schizophrenic" vs. "organic" process.
mesh_terms: D001307:Auditory Perception; D002339:Carotid Arteries / Q000601:surgery; D002561:Cerebrovascular Disorders / Q000150:complications / Q000601:surgery; D002908:Chronic Disease; D003937:Diagnosis, Differential; D004691:Endarterectomy; D006225:Hand / Q000502:physiology; D006801:Humans; D009048:Motor Skills; D019965:Neurocognitive Disorders / Q000175:diagnosis* / Q000209:etiology; D011581:Psychological Tests; D011594:Psychometrics; D012559:Schizophrenia / Q000175:diagnosis*; D014145:Trail Making Test