The comparative intercorrelations of brain-damaged and normal children on the Trail Making Test and the Wechsler-Bellevue Scale.
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Fifteen patients affected by Huntington's chorea were divided into two groups, 'slow' and 'fast', according to IQ scores on the Wechsler-Bellevue scale, and scores on some motor performance tests. A possible correlation was looked for between some biochemical data (cerebrospinal fluid (CSF), homovanillic acid (HVA), and 5-hydroxyindolacetic acid (5HIAA) levels, plasma dopamine-beta-hydroxylase (DBH), dopamine (DA) uptake by platelets), and clinical data (duration of illness, severity of symptoms, age of patients, IQ scores, 'slow' and 'fast' groups). The CSF, HVA, and 5HIAA levels were found to be significantly lowered in comparison with normal controls. DBH activity and DA uptake by platelets did not differ significantly from normal subjects. Treatment with haloperidol in all patients and with dipropylacetic acid in three patients did not appear to modify the CSF, HVA, and 5HIAA concentrations, the plasma DBH activity, or the DA uptake. There were no significant differences in the CSF, HVA, and 5HIAA contents between the two groups of patients, and there was no correlation between biochemical data and clinical features.
The purpose of this work was to determine the influence of psychosis on the intellectual efficiency in psychotic patients. The scores obtained by schizophrenics tested according to the Wechsler-Bellevue scale were correlated with psychopathological symptoms established during psychiatric examination. The group included 55 patients (18 women and 37 men). The results were subjected to statistical analysis. The following correlations were disclosed: 1) a correlation between the results of Wechsler scale scores and sex as well as the educational level, 2) a more pronounced correlation between the presence of psychotic productions and the results of the performance scale (in relation to verbal scale), 3) higher variability of scores in the verbal scale than in the performances scale, 4) lack of correlation between the age, the age of onset and the results.
The author analysed comparatively the results obtained in a 16-factor personality inventory of Cattell, in the WISKAD test, and Wechsler-Bellevue intelligence scale in a group of multiple sclerosis patients and a group of patients with radicular pains. Differences were found in factors A, N, O in the test of Cattell, in the Hy, Mk scales of the Wiskad test. In the group of multiple sclerosis the intelligence quotient was decreased in the performance scale and the vocabulary subtest in the Wechsler-Bellevue intelligence test. The obtained results were interpreted and hypotheses were put forward explaining the observed differences.
Twenty-three drug-free patients with an acute schizophrenic psychosis were studied by clinical rating scales, neuropsychological tests, computed tomography (CT) of the brain and analysis of monoamine metabolites in the cerebrospinal fluid (CSF). The psychological tests used were the Swedish version of the Wechsler-Bellevue Intelligence scale (WBI) and the Block Design test. The patients' performance in the Block Design test was negatively correlated to the width of the third and lateral ventricles. Test profiles indicative of schizophrenic cognitive impairment and left hemisphere dysfunction correlated significantly with a wide third ventricle, but not with the size of the lateral ventricles. Patients with a test profile indicative of left hemisphere dysfunction also had wider Sylvian fissures than the remaining patients. Neuropsychological test scores did not correlate with the CSF levels of the monoamine metabolites HVA, MHPG and 5-HIAA. Positive psychotic and autistic symptoms did not correlate with psychological test results, monoamine metabolites or with CT measures. The association between neuropsychological impairment and enlargement of the brain ventricles is in line with previous findings indicating that a subgroup of schizophrenic patients may be identified by neuropsychological and morphological methods.
Investigated the utility of subtests from the Wechsler-Bellevue Intelligence Scale and the Halstead-Reitan Neuropsychological Test Battery to differentiate between alcoholics and nonalcoholics (N = 76). Analyses of variance indicated that the alcoholics were more impaired than nonalcoholics. It was found that the Wechsler-Bellevue Performance subtests were more discriminative than were Verbal subtests, with performance on the Halstead-Reitan variables being intermediate. The nine measures that differentiated most significantly between groups were subjected to a stepwise multivariate discriminant analysis. The resulting function correctly classified Ss with an overall accuracy of 74.7%. It was found that the Block Design subtest was the best single discriminator. The findings were discussed in relationship to previous findings and with respect to general issues of clinical neuropsychological assessment.
Recent reviews have suggested that males and females show different patterns of intellectual impairment following lateralized brain injury. As the percentage of males in such studies increases, the magnitude of the difference between Verbal and Performance IQs increases. The present review reexamines this literature. Although the association between patient sex, pattern of intellectual deficit, and lateralized brain injury is reconfirmed for studies which used the Wechsler-Bellevue Intelligence Scale, there was no such relationship in those which used the more recent Wechsler Adult Intelligence Scale. In addition, it is shown that, in studies which used the former measure, the percentage of males may be highly correlated with other variables, a relationship which could have an effect on the pattern of intellectual loss following brain injury.
CNVs were studied in a group of 27 subjects with traumatic head injuries followed by protracted coma. Before CNV recording, all patients were subjected to Wechsler-Bellevue Intelligence Scale and to Benton's visual retention test. The findings were compared with those obtained from 80 normal subjects. A statistically significant decrease was observed in the CNV area in the group with traumatic lesions. No correlation could be found between CNV parameters and the results of the mental tests. In 7 of the subjects who presented the highest percentage of errors in Benton's test, a large post-imperative negative variation was observed.
The ability of men to identify popular word associations had earlier been shown to be affected by left-sided thalamic surgery for movement disorders; now, over a year later, the impairment has been observed with operations on both sides. In addition, upon testing at approximately the same time interval, men who had undergone temporal lobe surgery for epilepsy have also shown the impairment. In contrast, women have improved after the operations. The Word Association Test (WAT) requires a subject to identify popular word associations to 54 words. In a large group of unoperated subjects, the errors on the WAT were greater for men than for women, although the men scored higher on the Wechsler-Bellevue Intelligence Scale (WB). WAT scores were found to correlate with scores on the WB and the Minnesota Multiphasic Personality Inventory, and the WAT scores of the men tended to show a higher correlation with these measures than did those of the women.
The present study investigated the influence of perceptual field orientation, as measured by the Group Embedded Figures Test (GEFT), on cognitive functioning among alcoholics and nonalcoholics. The subjects were classified as field dependent, intermediate, or field independent based upon their GEFT scores. Cognitive function was assessed by the Wechsler-Bellevue Intelligence Scale as well as the Category Test. Tactual Performance Test, and Trail Making Tests of the Halstead-Reitan Neuropsychological Test Battery. Three primary findings emerged. First, the alcoholics appeared to be significantly impaired on measures of abstraction, problem solving, and adaptive abilities relative to nonalcoholics. Second, a direct relationship was found between GEFT scores and level of cognitive function within both alcoholic and nonalcoholic samples, with field-dependent subjects evidencing the most impaired performance. Third, the level of perceptual field orientation accounted for a large portion of the variance between the alcoholic and nonalcoholic samples, with field-independent alcoholics performing at a level comparable to or greater than other nonalcoholic subroups on a number of the cognitive variables. These results provide validational support for the GEFT and indicate that field orientation may be a relevant variable in the assessment of cognitive function in both alcoholics and nonalcoholics.
Performances on the Wechsler-Bellevue Intelligence Scale and on Halstead's neuropsychological measures were investigated in two groups of adult subjects with posttraumatic seizures. One of the groups, in addition to seizures, had abnormal and persistent focal cortical signs. The other group had seizures only and no other known deficits or complications. The results suggest that posttraumatic epilepsy, whether or not accompanied by abnormal and persistent focal cortical signs, is associated with significant psychological impairment. Patients with posttraumatic epilepsy alone perform somewhat better than those whose epilepsy is accompanied by independent evidence of cortical damage. However, the performance difference between such patients is not major, nor is it statistically significant on most measures such as those used in the present study. Possible reasons for the performance deficit in this group were discussed.
The intellectual efficiency of a group of drug addicts and a group of neurotic and senile subjects was tested against the Wechsler-Bellevue Intelligence Scale. Alongside an anxiety-related reduction in the efficiency of certain functions and a reduction in the ability to concentrate, the addicts evidenced a reduction in efficiency in the organisation of tasks and prediction of results related to depression of disharmony in the interaction of the various functions.
The "reduzierte Wechsler-Intelligenztest für psychiatrische Kranke (WIP)" by Dahl, a short form of the German version (HAWIE) of the Wechsler-Bellevue Intelligence Scale, comprising the subtests Information, Similarities, Picture Completion and Block Design was applied in a replication study to a heterogeneous group of 420 mental patients. Results show a sufficiently high level of agreement (multiple correlation) between the present test and the HAWIE-IQ. With this result and a sample independence of the correlation, two of the requirements of board clinical application of the WIP are met. On the other hand Dahl's assumption that the WIP represents the optimal (quadruple)combination of subtests of the full scale was not confirmed. Criticisms of the WIP in the literature are discussed. On the basis of previous studies and the present investigations it is held that the WIP is a useful contribution to measurement of general ability in a clinical setting.
We reviewed studies of the performance of non-brain-damaged men and women on the Wechsler Adult Intelligence Scales (i.e., the Wechsler-Bellevue, Wechsler Adult Intelligence Scale, and Wechsler Adult Intelligence Scale-Revised) to determine if there were sex differences on specific test items, on specific subtests, or on Verbal IQ, Performance IQ, or the Verbal-Performance Discrepancy score. There were sex differences on some items of each of the three measures, but the number of such differences was small. A number of studies suggested differences on subtests of these scales. A meta-analysis indicated that females tended to outperform males by about a third of a standard deviation on the Digit Symbol subtest, while males tended to outperform females to the same extent or greater on the Arithmetic and Information subtests. Finally, in the few studies on IQ or discrepancy-score differences, there was no evidence of any consistent differences between the sexes in the Verbal-Performance Discrepancy, although there was some tendency for males to obtain higher Verbal IQs. This review, therefore, does not suggest that there are any major differences between non-brain-damaged males and females on the Wechsler adult intelligence scales.
The aim of the present study was to analyse the correlation between the neuropsychological functioning and the intensity of the recent withdrawal syndrome. The authors compares two groups of alcoholics hospitalized for the acute withdrawal syndrome: of the predelirious character (N = 23) and alcoholic delirium (N = 21). Both groups of patients were treated identically in order to suppress the acute withdrawal syndrome. On the tenth day of the treatment the scores on the Gross Evaluation Scale and the Scale of Medical Risks were identical (p less than 0.01) in both groups of patients. On the fifteenth day of hospitalization, after five days without any psychopharmacological therapy, the patients underwent psychological testing: the Wechsler-Bellevue test, separately for the complete, verbal, and nonverbal scales and the Bender-Gestalt test. Statistically significant differences between the two groups of patients were found in the complete scale (p less than 0.05) and the verbal scale (p less than 0.05) of the Wechsler-Bellevue test, as well as in the subtests of the verbal scale: achievement (p less than 0.05), cognition (p less than 0.05), and concepts (p less than 0.01). These differences may be understood as a result of the intensity of the recent withdrawal syndrome, i.e., the patient just cured of delirium showed more serious disturbances in the complete scale and some subtests of the verbal scale of the Wechsler-Bellevue test.
Relationships between measures of general intelligence (Wechsler-Bellevue Verbal IQ, Performance IQ, and Full-scale IQ) and a measure designed to reflect adequacy of brain functions (Halstead Impairment Index) were studied using a control group and groups with left, right and generalized cerebral lesions. The results confirmed earlier findings of (1) differential levels of Verbal and Performance intelligence depending on damage of the left or right cerebral hemisphere; and (2) the greater general sensitivity of the Impairment Index than IQ values to brain damage. Comparative data suggested particularly that IQ values may underestimate brain-dependent adaptive abilities among non-brain-damaged subjects. A significant relationship between IQ values and the Impairment Index was present. This finding permitted evaluation of use of a differing cut-off Impairment Index, as an indicator of cerebral damage, depending on the subject's IQ level. The results suggested that increased accuracy in classifying subjects as brain-damaged might be achieved using a cutting Impairment Index of .4 or greater when the IQ value is 100 or more and .5 or greater when the IQ value is below 100.