The use of the Spiral After-Effect Test to differentiate chronic schizophrenics from chronic organics

Abstract

These results seem to indicate that Jastak's AQ measure adds little prognostic value to measures of I&. 4. J.\STAIC, J. A rigorous criterion of feeblemindedness.

Neuropsychological test results associated with psychiatric disorders in adults.

“…In less than a third of the studies was it stated that a neurologist's clinical exam and/or neurologic laboratory tests contributed to the neurologic diagnoses. Interestingly, in a study in which patients were referred by seven different psychiatrists, one of whom was also a neurologist, Barrett and Logue (1974) found that the psychological test identified 73% of the organks diagnosed by the neurologist but only 33% of those diagnosed by the psychiatrists who had less training in neurology. Because the organic groups in most of our 94 studies were composed totally or partially of subjects simply diagnosed as having "organic brain syndromes," it is also of interest that the psychological test used by Barrett and Logue (1974) had a much higher hit rate for patients whose neurologic diagnoses specified the nature and/or location of the brain lesion than for those with less specific (more questionable?)…”

Stronger tilt aftereffects in persons with schizophrenia.

“…An older body of work is suggestive of stronger visual aftereffects related to tilt (Calvert et al, 1991) and motion (Abraham & McCallum, 1973; Barrett & Logue, 1974; Claridge, 1960) in schizophrenia. As we recently reviewed (Thakkar et al, 2019), however, significant sources of variability across studies, as well as methodological issues related to experimental design and clinical characterization, preclude conclusive interpretation of this older work.…”