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Wechsler Adult Intelligence Scale (wechsler + adult_intelligence_scale)
Selected AbstractsCognitive functioning in substance abuse and dependence: a population-based study of young adultsADDICTION, Issue 9 2009Antti Latvala ABSTRACT Aims To investigate whether substance use disorders (SUDs) are associated with verbal intellectual ability, psychomotor processing speed, verbal and visual working memory, executive function and verbal learning in young adults, and to study the associations of SUD characteristics with cognitive performance. Participants A population-based sample (n = 466) of young Finnish adults aged 21,35 years. Measurements Diagnostic assessment was based on all available information from a structured psychiatric interview (SCID-I) and in- and out-patient medical records. Established neuropsychological tests were used in the cognitive assessment. Confounding factors included in the analyses were comorbid psychiatric disorders and risk factors for SUDs, representing behavioural and affective factors, parental factors, early initiation of substance use and education-related factors. Findings Adjusted for age and gender, life-time DSM-IV SUD was associated with poorer verbal intellectual ability, as measured with the Wechsler Adult Intelligence Scale,Revised (WAIS-R) vocabulary subtest, and slower psychomotor processing, as measured with the WAIS-R digit symbol subtest. Poorer verbal intellectual ability was accounted for by parental and own low basic education, whereas the association with slower psychomotor processing remained after adjustment for SUD risk factors. Poorer verbal intellectual ability was related to substance abuse rather than dependence. Other SUD characteristics were not associated with cognition. Conclusions Poorer verbal intellectual ability and less efficient psychomotor processing are associated with life-time alcohol and other substance use disorders in young adulthood. Poorer verbal intellectual ability seems to be related to parental and own low basic education, whereas slower psychomotor processing is associated with SUD independently of risk factors. [source] Neuropsychological correlates of hippocampal and rhinal cortex volumes in patients with mesial temporal sclerosisHIPPOCAMPUS, Issue 8 2003Catherine E. O'Brien Abstract Considerable progress has been made toward understanding the function of the primate rhinal cortex, comprising the entorhinal (ErC) and perirhinal (PrC) cortices. However, translating animal models to human memory has been limited by the technological problems associated with characterizing neural structures in vivo. Functional correlates of hippocampal and rhinal cortex volume changes were examined in a sample of 61 temporal lobe epilepsy patients with mesial temporal sclerosis (MTS; 33 left, 28 right). Patients were administered the Wechsler Adult Intelligence Scale (revised or third edition), the Wechsler Memory Scale (revised or third edition), and a spatial maze task. Neuropsychological data, together with rhinal cortex and hippocampal volumes, collected in our earlier study (O'Brien CE, Bowden SC, Whelan G, Cook MJ, unpublished observations), were analyzed using multiple regression. The only significant predictor of verbal memory function was the difference score between the volume of left hippocampus and the left PrC. Spatial maze scores were predicted by the bilateral sum of ErC volume. The difference score between the left hippocampus and left PrC volumes was the most powerful predictor of verbal episodic memory. Right hippocampal volume was not a significant predictor of nonverbal episodic memory. Verbal and nonverbal semantic memory were not significantly predicted by any combination of rhinal cortex structures. This quantitative study suggests a lateralized or material-specific memory function for the left hippocampus and left PrC, in contrast to the bilateral role of the ErC. The left hippocampus and left PrC appear to act on verbal memory function through an opposing relationship. Finally, differentiation between hippocampal and subhippocampal components in terms of episodic and semantic memory, respectively, could not be supported by the current data. © 2003 Wiley-Liss, Inc. [source] The neuropsychological profile in dementia with Lewy bodies and Alzheimer's diseaseINTERNATIONAL JOURNAL OF GERIATRIC PSYCHIATRY, Issue 2 2009Haruhiko Oda Abstract Objective To demonstrate the exact nature of the cognitive profile of dementia with Lewy bodies (DLB) on standardized neuropsychological tests including the Wechsler Adult Intelligence Scale,,Revised (WAIS-R) and the Wechsler Memory Scale,,Revised (WMS-R). Design We examined the WAIS-R and the WMS-R of 26 patients with probable DLB (based on the Consensus Criteria for the clinical diagnosis of DLB) and of 78 patients with probable Alzheimer's disease (AD) (based on criteria of the National Institute for Neurological and Communicative Disorders and Stroke-Alzheimer's disease and Related Disorders Association) who were matched to the patients with DLB 3:1 by Mini-Mental State Examination score. Results The DLB group scored significantly lower on the Block Design, Object Assembly and Digit Symbol of WAIS-R and significantly higher on the Logical Memory I, Verbal Paired Associates I, Logical Memory II, Visual Paired Associates II, Verbal Paired Associates II and Visual Reproduction II of WMS-R (p,<,0.0016 to p,<,0.0001). In a comparison between the DLB group and the AD group, a logistic regression analysis revealed that the weighted sum score of the Object Assembly and the Logical Memory II may differentiate DLB from AD with a sensitivity of 0.81 [95% Confidence Intervals (CI),=,0.66,0.96] and a specificity of 0.76 (95% CI,=,0.66,0.85). Conclusions The WAIS-R and the WMS-R can help to differentiate DLB from AD. Copyright © 2008 John Wiley & Sons, Ltd. [source] Comparison of the WAIS-III and WISC-IV in 16-Year-Old Special Education StudentsJOURNAL OF APPLIED RESEARCH IN INTELLECTUAL DISABILITIES, Issue 2 2010Shirley Gordon Background, Previous research with earlier versions of the WISC and WAIS has demonstrated that when administered to people who have intellectual disabilities, the WAIS produced higher IQ scores than the WISC. The aim of this study was to examine whether these differences still exist. A comparison of the Wechsler Adult Intelligence Scale , Third Edition (WAIS-III) with the Wechsler Intelligence Scale for Children , Fourth Edition (WISC-IV) was conducted with individuals who were 16 years old and receiving special education. Materials and Methods, All participants completed the WAIS-III (UK) and WISC-IV (UK). The order of administration was counterbalanced; the mean Full Scale IQ and Index scores on the WAIS-III and WISC-IV were compared. Results, The WAIS-III mean Full Scale IQ was 11.82 points higher than the mean Full Scale IQ score on the WISC-IV. Significant differences were also found between the Verbal Comprehension Index, Perceptual Reasoning/Organization Index and Processing Speed Index on the WAIS-III and WISC-IV, all with the WAIS-III scoring higher. Conclusions, The findings suggest that the WAIS-III produces higher scores than the WISC-IV in people with intellectual disabilities. This has implications for definitions of intellectual disability and suggests that Psychologists should be cautious when interpreting and reporting IQ scores on the WAIS-III and WISC-IV. [source] Comparison of the Peabody Picture Vocabulary Test,Third Edition and Wechsler Adult Intelligence Scale,Third Edition with university studentsJOURNAL OF CLINICAL PSYCHOLOGY, Issue 3 2001Nancy L. Bell This study examined the relationship between the Peabody Picture Vocabulary Test,Third Edition (PPVT-III) and Wechsler Adult Intelligence Scale,Third Edition (WAIS-III) using 40 adults who ranged in age from 18 to 41 (mean age of 22 years). Participants were administered the PPVT-III and WAIS-III in counterbalanced fashion to control for order effects. Results revealed that the PPVT-III score was related to the WAIS-III Verbal IQ (VIQ) and Full Scale IQ (FSIQ) scores but unrelated to the Performance IQ (PIQ) score. In addition, analyses indicated that, while there were no significant differences between the PPVT-III score and WAIS-III mean FSIQ and PIQ scores, the PPVT-III mean score was significantly lower than the WAIS-III VIQ. Further analysis indicated that the PPVT-III adequately estimated WAIS-III FSIQ and VIQ scores for participants who were classified as Average or High Average on the WAIS-III. However, for participants in the Superior range, the PPVT-III tended to underestimate FSIQ and VIQ scores by approximately 10 points. © 2001 John Wiley & Sons, Inc. J Clin Psychol 57: 417,422, 2001. [source] A neuropsychological assessment of frontal cognitive functions in Prader,Willi syndromeJOURNAL OF INTELLECTUAL DISABILITY RESEARCH, Issue 5 2007J. Jauregi Abstract Background Prader,Willi syndrome (PWS) is associated with a characteristic behavioural phenotype whose main features are, alongside compulsive hyperphagia, deficits in social behaviour: social withdrawal, temper tantrums, perseverative speech and behaviour, mental rigidity, stereotyped behaviour, impulsiveness, etc. Similar symptoms may also be found in autistic spectrum disorders and lesional pathologies of the frontal lobe. In both cases, such symptoms have been related to dysfunctions in frontal cognitive processes such as attention, working memory and executive functions. This study uses standardized neuropsychological instruments to analyse the degree to which these processes are affected in PWS. Methods The sample comprised 16 individuals with a genetically confirmed PWS diagnosis. Subjects' IQ (Wechsler Adult Intelligence Scale), academic level, laterality and body mass index (BMI) were calculated. Attention, memory and executive functions were analysed using standard, widely employed neuropsychological tests. We compared the results of the sample group with the general population. Correlation analyses were carried out with IQ, academic level and BMI. Results In all the neuropsychological measures focusing on attention, executive functions and visuoperceptual organization, the study sample scored significantly lower than the normative reference population. The scores of the tests used for measuring immediate memory were also significantly lower when trials required sequential processing, although not when they required simultaneous processing. In the memorization of a list of words, subjects showed an initial deficit which disappeared with repetition, enabling them to obtain scores similar to the reference population. No significant correlations were found with BMI, and a higher IQ or academic level did not improve scores in the majority of tests. Conclusions The study shows a deficit in elementary frontal cognitive processes in PWS patients. This deficit may be involved in the social behaviour disorders that characterize such patients, as described in other development or frontal syndrome pathologies. However, we cannot affirm that the deficits found are specific to PWS; they could also occur in other causes of intellectual disability. Although in the study sample IQ did not correlate with frontal deficits, further research is needed to establish whether the neuropsychological alterations described form part of a cognitive phenotype for PWS. We believe that our understanding of the social behaviours typical of PWS may be improved by taking into consideration the cognitive functioning models of the prefrontal lobe, particularly those applied to pervasive developmental disorders. [source] Deterioration of intelligence in methamphetamine-induced psychosis: Comparison with alcohol dependence on WAIS-IIIPSYCHIATRY AND CLINICAL NEUROSCIENCES, Issue 1 2010Shih-Ku Lin md Aims:, Long-term use of methamphetamine could induce psychosis, but consequences with regards to intelligence have seldom been investigated. Long-term use of alcohol could also result in intellectual deterioration. Methods:, The IQ of 34 methamphetamine-induced psychosis (MIP) patients (age, 28.7 ± 6.1 years) and 34 alcohol-dependent (AD) patients (age, 40.7 ± 7.3 years) was compared using the Chinese version of the Wechsler Adult Intelligence Scale,Third Edition (WAIS-III). Results:, The average full-scale IQ, verbal IQ, performance IQ, verbal comprehension index, working memory index, perceptual organization index, and processing speed index was 82.3 ± 10.8, 84.3 ± 11.9, 81.9 ± 12.1, 85.5 ± 11.9, 84.7 ± 12.5, 85.4 ± 13.6, and 78.5 ± 12.7 in MIP patients and 90.5 ± 12.0, 95.2 ± 11.3, 86.0 ± 13.7, 95.5 ± 11.0, 87.1 ± 14.5, 96.2 ± 13.1, and 84.5 ± 15.0 in AD patients, respectively. There were six MIP patients (17.6%) whose full-scale IQ was <70 and 13 (38.2%) whose full-scale IQ was <85 and >70, while one AD patient had a full-scale IQ <70 (2.9%) and 10 (22%) had full-scale IQ <85 and >70. Conclusions:, Long-term use of methamphetamine can result not only in psychosis, but also in mentality deterioration. Intelligence deterioration is more severe in clinical MIP patients than AD patients. Assessment of the mentality of MIP patients is suggested to help with the implementation of rehabilitative programs for these patients. [source] Estimation of premorbid IQ in individuals with Alzheimer's disease using Japanese ideographic script (Kanji) compound words: Japanese version of National Adult Reading TestPSYCHIATRY AND CLINICAL NEUROSCIENCES, Issue 3 2006KEIKO MATSUOKA phd Abstract The National Adult Reading Test (NART) is widely used as a measure of premorbid IQ of the English-speaking patients with dementia. The purpose of the present study was to develop a Japanese version of the NART (JART), using 50 Japanese irregular words, all of which are Kanji (ideographic script) compound words. Reading performance based on JART and IQ as measured by the Wechsler Adult Intelligence Scale,Revised (WAIS-R) was examined in a sample of 100 normal elderly (NE) persons and in 70 age-, sex-, and education-matched patients with Alzheimer's disease (AD). The NE group was randomly divided into the NE calculation group (n = 50) and the NE validation group (n = 50). Using the NE calculation group, a linear regression equation was obtained in which the observed full-scale IQ (FSIQ) was regressed on the reading errors of the JART. When the regressed equation computed from the NE calculation group was applied to the NE validation group, the predicted FSIQ adequately fit the observed FSIQ (R2 = 0.78). Further, independent t -tests showed that the JART-predicted IQs were not significantly different between the NE and AD groups, whereas the AD group performed worse in the observed IQs. The reading ability of Kanji compound words is well-preserved in Japanese patients with AD. The JART is a valid scale for evaluating premorbid IQ in patients with AD. [source] Association of global brain damage and clinical functioning in neuropsychiatric systemic lupus erythematosusARTHRITIS & RHEUMATISM, Issue 10 2002G. P. Th. Objective To investigate the relationship between quantitative estimates of global brain damage based on magnetization transfer imaging (MTI) and cerebral functioning, as measured by neurologic, psychiatric, and cognitive assessments, as well as disease duration in patients with a history of neuropsychiatric systemic lupus erythematosus (NPSLE). Methods In a clinically heterogeneous group of 24 female patients (age range 19,65 years, mean age 35 years) with a history of NPSLE, the correlation values of several volumetric MTI measures and an estimate of cerebral atrophy, neurologic functioning (Kurtzke's Expanded Disability Status Scale [EDSS]), psychiatric functioning (the Hospital Anxiety and Depression Scale [HADS]), and cognitive functioning (cognitive impairment score [CIS] derived from the revised Wechsler Adult Intelligence Scale), as well as several measures of disease duration were assessed using Pearson's correlation coefficient. Results Quantitative volumetric estimates of global brain damage based on MTI and a measure of global brain atrophy correlated significantly with the EDSS, HADS, and CIS scores. No significant correlation was found between the quantitative estimates of global brain damage and the measures of disease duration. Conclusion The results of this study demonstrate that volumetric MTI parameters and cerebral atrophy reflect functionally relevant brain damage in patients with NPSLE. Furthermore, the absence of a linear relationship between disease duration and results of volumetric MTI measures and atrophy suggests a complicated pattern of accumulating brain damage in patients with NPSLE. [source] Memory functioning in familial bipolar I disorder patients and their relativesBIPOLAR DISORDERS, Issue 2 2009Seema Quraishi Objective:, The aim of this study was to compare the memory function of patients with familial bipolar I disorder (BD I) who had shown psychotic features, their non-psychotic, non-bipolar first-degree relatives, and normal controls. Method:, We assessed 38 patients with a lifetime diagnosis of BD I who had experienced psychotic symptoms, 49 of their non-psychotic, non-bipolar first-degree relatives, and 44 controls. Patients and relatives were from families multiply affected with functional psychotic illness. A five-subtest short form of the Wechsler Adult Intelligence Scale,Revised and three Wechsler Memory Scale subtests were administered to all participants. Results:, BD I patients showed deficits in verbal memory and verbal learning but not in visual memory. Compared to controls, relatives showed worse verbal learning at a statistically significant or suggestive level and performed significantly worse in both immediate and delayed verbal memory. Similar to patients, there were no differences between the relatives and control group for visual memory. Conclusion:, Impaired verbal memory and learning were found in patients and their relatives. These deficits may represent candidate endophenotypic markers for bipolar disorder. [source] Follow-up of adolescents born extremely preterm: cognitive function and health at 18 years of ageACTA PAEDIATRICA, Issue 9 2010Anne-Li Hallin Abstract Aim:, To compare cognitive ability, school achievement and self-perceived health aspects in adolescents born extremely preterm and term born controls. Method:, Fifty-two, out of 61, extremely preterm born adolescents (mean age 18.4 years) and 54 matched controls (mean age 18.3 years) born at full term were investigated; intelligence quotient was measured with the Wechsler Adult Intelligence Scale; cognitive flexibility, i.e. a measure of visuomotor speed and attention, with the Trail Making Test; school achievement and choice of upper secondary programmes were reported. Health aspects were investigated in a semi structured interview. Result:, The adolescents born prematurely had significantly lower IQ than the controls, mean 93 (SD 15.4) vs 106 (12.5), p < 0.001; showed slower visuomotor speed; had lower grades from compulsory school (192.7 vs 234.8, p < 0.001); and chose to a greater extent practical upper secondary school programmes. There were no differences between the groups in health care consumption, prevalence of chronic disease, allergy or infectious diseases. Conclusion:, Poorer cognitive performance, in extremely preterm born individuals, seems to persist into late adolescence. Fewer prematurely born than control chose theoretical upper secondary school programmes. However, no difference was noted regarding self-perceived health aspects. [source] | ||||||||||||||||||||||