Prediction of WAIS scores from group ability tests

Watson, Charles G.; Klett, William G.

doi:10.1002/1097-4679(197301)29:1<46::aid-jclp2270290118>3.0.co;2-a

Cited by 21 publications

(7 citation statements)

References 2 publications

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“…The Ability-based estimates of Wechsler Adult Intelligence Scale Full Scale I& (Watson & Klett, 1973), and estimated chlorpromazine-equivalent daily dosage of antipsychotic medication for the groups differed substantially (all p s <.001) and are reported in Table 1. Chlorpromazine equivalents were calculated using data presented by Pricn and Caffey (1974) and the American Hospital Formulary Service (1979) manual.…”

Section: Subjectsmentioning

confidence: 99%

Logical, reasoning deficits in schizophrenia and brain damage

Watson¹,

Wold²

1981

J. Clin. Psychol.

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Von Domarus and Arieti have theorized that failure to reason by conventional logical rules is at the root of schizophrenic thought disorder, but the available research on this view is inconclusive. We compared the performance of schizophrenics (N = 100), brain‐damaged patients (N = 50) and psychiatric controls (N = 50) on closely meatched measures of Overexpansive and “Von Domarus” (similarity implies identity) syllogistic reasoning errors. Before the samples were matched for education and intelligence, the brain‐damaged and schizophrenic patients made more Overexpansive errors than the controls, but the Von Domarus error difference was not significant. After matching, both differences were nonsignificant. The results indicate that inability to use syllogistic reasoning properly is probably not the root cause of schizophrenic thought disorder.

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Section: Subjectsmentioning

confidence: 99%

Logical, reasoning deficits in schizophrenia and brain damage

Watson¹,

Wold²

1981

J. Clin. Psychol.

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“…The mean age, education and TEA score of the 200 Ss were 37.8 (S = 10.9), 11.6 (2.4) and 50.7 (19.7), respectively. Using a system devised by Watson and Klett (1973), it was possible to estimate that the mean WAIS Full Scale I& of the samples would have approximated 103. Predictably, however, the groups differed substantially in months of previous hospitalization ( F = 4.35; dfs = 7, 192; p <.OOl).…”

Section: Subjectsmentioning

confidence: 99%

A test of the Broen-Storms theory of cognitive deficit in schizophrenia

et al. 1981

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Broen and Storms have developed a popular behavioristic theory t.0 explain schizophrenic thought disorder. It holds that thought disorder results from schizophrenics' having higher drive levels and lower res onse-strength ceilings than non-schizophrenics. As a result, the strength o r appropriate (usually strong) res onses is rivaled by that of inappropriate, ordinarily-weak responses. TI%, in Broen and Storms' the0 is the cause of disorganized, schizophrenic behavior. We tested several T y otheses derived from Broen and Storms' assumptions that schizophrenics Rave higher drive and lower response strength ceilings than controls in a paired-associates learning study. We did not find support for our hypotheses that schizophrenics would show better early-trials learning than controls, that a presumably drive-inducing threat of pain would enhance early trials learning in schizophrenics or controls that either threat of pain or schizophrenia would be associated with a low /earning asymptote, or that either the ositive or ne ative effects of pain would be accentuated in schizophrenics. %he results $id not support the theory. (1961, 1964, 1966) have proposed a Hullian theory in which cognitive deficit in schizophrenia is attributed to the high drive levels and/or low response strength ceilings believed to characterize schizophrenics. While high drive levels ordinarily would strengthen both appropriate and inappropriate responses, the low ceiling limits the strength of the appropriate, generally strong, ones to a greater degree than it does those of weaker, inappropriate behaviors. Thus, the high drive level tends to increase the strength of the weaker, inappropriate responses more than it does those of stronger, appropriate behaviors in schizophrenics. Disorganized, schizophrenic behaviors result. This ingenious, authors are indebted to $eresa Kucala for her contributions to this research. Broen and Storms

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“…The mean age, education and length of previous hospitalization of this sample were 40.3 years (S = 11.6), 11.4 years (S = 2.5), and 4.8 months (S = 7.5). Using a system developed by Watson and Klett (1973) t o estimate WAIS IQs from the SRA Test of Educational Ability, which was administered to these Ss, it was estimated that the mean Full Scale WAIS I& of the sample would have been 103.…”

Section: Subjects and Proceduresmentioning

confidence: 99%

A note on the pathology of anhedonia

Watson¹,

Jacobs²,

Kucala³

1979

J. Clin. Psychol.

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Tested the hypotheses that anhedonia afflicts only a minority of schizophrenics and is bimodally distributed among them by comparing the Anhedonia scale distributions of schizophrenic and psychiatric control samples (N = 90). Only 45% of the schizophrenics produced scores higher than those characteristic of the controls. While the schizophrenics' distribution appeared to be bimodal, its irregularity precluded a definitive assessment of the bimodality hypothesis. The correlation between age and Anhedonia was positive for anhedonics but not for non‐anhedonic schizophrenics or controls; these findings suggest that anhedonia is a mildly progressive disorder among those schizophrenics who experience it.

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Prediction of WAIS scores from group ability tests

Cited by 21 publications

References 2 publications

Logical, reasoning deficits in schizophrenia and brain damage

Logical, reasoning deficits in schizophrenia and brain damage

A test of the Broen-Storms theory of cognitive deficit in schizophrenia

A note on the pathology of anhedonia

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