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A comparative study of the performance of English and Xhosa speaking children on the Wechsler Intelligence Scale for Children-Revised (WISC-R)Runciman, Carey Lynn 03 October 2013 (has links)
The purpose of this study was to compare the WISC-R subtest score scatter patterns and obtain preliminary normative data on the WISC-R Adjunctive tests (Digit Span Forward; Digit Span Backward; Digit Supraspan; Coding Immediate Recall and Coding Delayed Recall) on a non-clinical population of South African English (n= 15) and Xhosa (n= 12) speaking, standard six children, studying in English medium schools. Tests were administered to 27 subjects, both male (n=19) and female (n=8), with a mean age of 14.1 years (range = 13.3-15.3). The results show that White English speaking children outperform Black Xhosa speaking children on Verbal, Performance and Full Scale IQs and all subtests, but that these differences tended to disappear when Full Scale IQ and school grade average were controlled for. No subtest score scatter was present for either group although more specific test items appeared to be more difficult for Xhosa speaking subjects and may have contributed to generally lowered scores. Results suggest that caution must be employed in assigning Xhosa speaking South African children to absolute IQ categories. However, the WISC-R has validity for diagnostic use on both White English speaking and Black Xhosa speaking South African children as there was no evidence of a significant Verbal IQ/Performance IQ discrepancy, or significant low subtest scatter for either group. Normative tables are presented for the use of WISC-R Adjunctive tests. / KMBT_363 / Adobe Acrobat 9.54 Paper Capture Plug-in
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Comparability of WPPSI-R and Slosson Tests as a Function of the Child's EthnicityHernandez, Colleen H. (Colleen Head) 05 1900 (has links)
The purpose of this study was two-fold. First, this study compared the performance of children on the WPPSI-R with their performance on the Slosson Intelligence Test. Secondly, this study explored the comparability of minority and non-minority students' scores on the WPPSI-R. Seventy five children between 3 and 7 years of age were administered the WPPSI-R and Slosson. Of this sample, 25 children were White, 25 children were Black, and 25 children were Mexican American. Low, but significant correlations were found between WPPSI-R and Slosson scores. The Vocabulary subscale of the WPPSI-R correlated highest, while the Geometric Design subscale correlated the lowest with the Slosson test scores. Further analyses indicated that White children obtained significantly higher scores on the WPPSI-R than both Black and Mexican American children.
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Traumatic Brain Injury in Children and Adolescents: An Evaluation of the WISC-III Four Factor Model and Individual Cluster ProfilesShafer, Micheal E. 08 1900 (has links)
Traumatic brain injury (TBI) is the leading cause of death and disability among children and adolescents in the US. Children and adolescents who sustain moderate and severe head injuries are much more likely to evidence significant deficits in neuropsychological functioning when compared with children with mild head injuries. Information about the recovery process and functional sequelae associated with moderate and severe head injuries remains limited, despite clear indications that children who experience such injuries typically exhibit notable deficits in intellectual functioning, particularly during the acute phase of recovery. Thus, the present study was conducted to augment research on intellectual functioning in children with moderate or severe head injuries. To accomplish this, the study first examined the proposed factor model of the WISC-III in children with moderate and severe TBI. Given high prevalence rates and similar trends in cognitive impairment, particularly within the frontal lobe structures (e.g., disrupted cognitive flexibility and divided attention), the study also examined this same factor model for a group of children with attention-deficit/hyperactivity disorder (ADHD) and compared it with the model fit from the TBI group. In the second phase of the study, both the TBI and AHDH groups were evaluated to determine if distinct WISC-III index score cluster profiles could be identified. Lastly, the cluster groups for both the TBI and ADHD samples were validated using important demographic and clinical variables, as well as scores from independent neuropsychological measures of attention, executive functioning, and working memory. Parent reports of psychological and behavioral functioning were also used in an attempt to further distinguish the cluster groups. Study limitations and future research implications were also discussed.
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Perceived and demonstrated competence as affected by child abuseGallinger, Diane 01 January 1983 (has links)
No description available.
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Test anxiety as a moderator in the prediction of school achievement from measured abilityRobinson, Gina Lea 01 January 1995 (has links)
No description available.
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The WASI as a Screening Tool for Counselors in the Referral Decision for a Neuropsychological EvaluationSnowden, Marie Dillon 08 1900 (has links)
When a client has cognitive impairment resulting from cerebral dysfunction (CD) that goes undiagnosed and, therefore, untreated, psychotherapy and rehabilitation outcome is likely to be impacted negatively. Due primarily to managed care, screening for CD has reduced substantially. Master's level counselors need a cost-efficient way to detect possible CD and, thus, justify referral for neuropsychological evaluation. This study examined the Wechsler Abbreviated Scale of Intelligence (WASI) instrument's ability to screen for possible CD by examining the relationship between a) WASI Performance IQ (PIQ) and Verbal IQ (VIQ) scores and neuropsychological test scores, and b) the VIQ-PIQ discrepancy and the severity of disability. In this retrospective study, test scores were extrapolated from neuropsychological assessments conducted between 2001 and 2004 on 73 CD-diagnosed adults at a CARF accredited rehabilitation facility. Disability severity ratings of mild, moderate, and severe were assigned based on clinical judgment and interrater agreement. The assessment battery included the WASI and several neuropsychological tests: Halstead-Reitan TPT, TMT-A and B, and FOT; WMS-III VR-I and 2, LM-1 and 2, and MC; McCarron-Dial HVDT; SDMT; and SCT. Based upon a multitrait-multimethod matrix, mild to moderate convergent and discriminant validity was found with the WASI VIQ and PIQ traits among neuropsychological verbal and performance measures. Statistically, the SCT, TMT-A, and HVDT-right shape were most predictive of the PIQ, and the WMS-III LM-2 and MC were most predictive of the VIQ. VIQ-PIQ discrepancy did not predict severity of disability, but IQ means and subtest scores between the mild and severe groups were significantly different. Results indicated that WASI VIQ-PIQ discrepancy did not detect CD. However, WASI subtest scores of 40 or lower may justify further evaluation of potential CD. Contrary to the WASI manual, Similarities and Block Design rather than Vocabulary and Matrix Reasoning subtest scores may be more predictive of CD. This author suggested that counselors administer the WASI, SCT, and TMT-A as a time efficient screening method for CD.
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Adaptação transcultural e propriedades psicométricas do subteste Visual Reproduction (Reprodução Visual I e II) da Wechsler Memory Scale - Fourth Edition (WMS-IV), (Escalas de Memória de Wechsler) para uma população do Brasil / Transcultural Adaptation of the subtest Visual Reproduction I and II of the Wechsler Memory Scale - IV (WMS-IV) (Wechsler Memory Scale) to one culture from Brazil.Spedo, Carina Tellaroli 27 April 2012 (has links)
Instrumentos de avaliação da memória episódica não verbal são escassos. Além disto, consideramos a crescente necessidade de esforços para a adaptação transcultural de instrumentos de memória para nosso contexto. O subteste Visual Reproduction I e II (Reprodução Visual I e II) faz parte da Wechsler Memory Scale (WMS) e se trata de uma escala mundialmente utilizada e adaptada a diversas culturas, sendo considerada padrão ouro dentre as medidas de avaliação da memória. No presente estudo, utilizamos o subteste Reprodução Visual, da WMS na sua quarta edição (WMS-IV). O Reprodução Visual (RV) é subdividido em três domínios de investigação da memória visual (evocação imediata, evocação tardia e reconhecimento) e uma tarefa opcional para avaliação da percepção visual, habilidades construtivas e atenção aos detalhes (cópia). Além disto, o escore de cada um dos três domínios avaliados podem ser contrastados, de modo que se obtenham informações sobre a retenção, o quanto a memória é melhor ou pior do que as habilidades construtivas e, por último, o quão o sujeito evoca livremente ou precisa de pistas para evocar a informação aprendida. Esta versão da WMS-IV é uma revisão da WMS-III, cujos estudos resultaram em algumas alterações metodológicas e de conteúdo, no sentido de facilitar a análise dos resultados, diminuir os vieses de aplicação e correção. Desta forma, para atingir os propósitos desta pesquisa foram realizados dois estudos: o Estudo 1 teve como objetivo realizar a adaptação transcultural do subteste Visual Reproduction I and II - Wechsler Memory Scale IV (WMS-IV) e apresentar uma versão para uso preliminar no Brasil. O estudo 2 consistiu na avaliação das suas propriedades psicométricas. Participaram do estudo 1 três tradutores com fluência no inglês, que realizaram traduções independentes, dois tradutores profissionais e dois juízes especialistas (um neurologista e uma neuropsicóloga). Os juízes especialistas e um tradutor profissional investigaram a equivalência conceitual, semântica e operacional dos itens. Uma amostra de 24 sujeitos saudáveis responderam ao pré-teste, que consistiu na investigação da compreensão e dificuldade da versão adaptada do Reprodução Visual I e II. No estudo dois, participaram 62 adultos saudáveis e 29 adultos com Acidente vascular cerebral em hemisfério direito, no território da Artéria cerebral média (AVC-ACMHD). Os sujeitos tinham idade entre 20 e 59 anos e as respostas foram consideradas para análises de confiabilidade e validade baseadas em análises estatísticas da teoria clássica (ANOVA, ANCOVA, coeficiente alfa de Cronbach, e correlação de Pearson) e da teoria moderna de testagem (Teoria de Resposta ao Item (TRI) através do modelo de um parâmetro ou método de Rasch). O processo de análise das propriedades psicométricas utilizou a metodologia recomendada pelo American Educational Research Association [AERA], American Psychological Association [APA] e o National council on measure in education [NCME], 2008 indicada pela editora responsável pelos direitos autorais do WMS-IV. Na confiabilidade, foi investigada a consistência interna (coeficiente alfa de Cronbach) e a estabilidade temporal (correlação de Pearson). Na investigação da validade, foram investigados: os processos de resposta, a estrutura interna (correlação de Pearson, Teoria de resposta ao Item pelo método de Rash), a relação com outros instrumentos (Mini Exame do Estado Mental - MEEM e Figuras Complexas de Rey) e a relação com variáveis externas (AVC-ACMHD comparados a controles saudáveis). O índice de consistência interna do subteste foi de 0,92 e a estabilidade teste-reteste mostrou correlação significativa, exceto com a tarefa de evocação tardia. Esses resultados são similares aos do estudo original, sendo, portanto caracterizada a sua equivalência. Os resultados do estudo de validade mostraram que há equivalência em termos de conteúdo.A investigação da estrutura interna pelo coeficiente de correlação de Pearson evidenciou que todas as figuras obtiveram correlação significativa (p<0,001). Ainda mais: correlacionaram-se congruentemente durante toda a tarefa. Na investigação da estrutura interna pelo método de Rasch foi evidenciado que o teste é unidimensional, que a progressão de theta ao longo das categorias de resposta foram como o esperado pelo modelo. A TRI mostrou que a figura mais fácil é a figura 1 da tarefa de evocação imediata e a mais difícil é a figura 5 de evocação tardia. Os índices de correlação theta foram superiores a 0,5, mostrando correlação. No mapa de pessoas-itens as variáveis tenderam a avaliar o constructo em níveis inferiores ao de habilidade dos sujeitos, sugerindo a necessidade de itens avaliando níveis mais altos do constructo. Na análise de validade considerando outras medidas a tarefa de evocação imediata o escore total e evocação tardia apresentaram correlação com o total da tarefa de memória das figuras complexas de Rey. As tarefas de cópia correlacionaram-se com o total de cópia do teste das figuras complexas de Rey. A tarefa de evocação imediata o escore total e evocação tardia apresentaram correlação com o total do MEEM. A análise de covariância mostrou que a escolaridade exerce influência nos escores do RV. Assim, depois de controlada a escolaridade foi evidenciado que os controles tiveram melhor desempenho em todas as tarefas do RV, quando comparados aos pacientes com AVC-ACMHD. Na análise qualitativa, através do escalonamento e contraste dos escores, foi observado que o baixo desempenho dos pacientes com AVC se deve ao fato de que esses pacientes percebem muito mal o item, com pior controle motor, habilidade visuo-construtiva e capacidade de prestar atenção a detalhes. O resultado é uma menor aquisição da informações e as conseqüências são dificuldades na memória episódica não verbal . Os nossos resultados foram demonstrativos de que o RV da WMS- IV, além de culturalmente equivalente em termos de confiabilidade e validade, é adequado para a cultura dos sujeitos e pacientes avaliados em Ribeirão Preto, preciso e válido para o uso no Brasil. Saliente-se a necessidade de estudos normativos com esse subteste. / Tools for evaluation of non-verbal episodic memory are scarce. Furthermore, we consider the increasing need for efforts to cross-cultural adaptation of instruments of memory for our context. The subtest Visual Reproduction I and II is part of the Wechsler Memory Scale (WMS), and it is used worldwide scale and adapted to different cultures, and is considered the gold standard among assessment measures of memory. In the present study, we use the Visual Reproduction subtest of WMS in its fourth edition (WMS-IV). The Visual Reproduction (VR) is subdivided into three fields of research in visual memory (immediate recall, delayed recall and recognition) and an optional task to assess visual perception, constructive abilities and attention to detail (copy). Moreover, the score of each of the three domains can be contrasted evaluated in order to obtain information on retention, and the memory is better or worse than the constructive abilities, and finally, how the subject refers freely or need tracks to evoke the information learned. This version of the WMS-IV is a review of the WMS-III, whose studies have resulted in some changes in methodology and content, to facilitate the analysis of results, lower camest application and correction. Thus, to obtain the purposes of this research were carried out two studies: Study 1 was aimed at making cross-cultural adaptation of the subtest \"Visual Reproduction I and II - Wechsler Memory Scale - IV (WMS-IV)\" and present a version for use preliminary in Brazil and the second study consisted of an evaluation of its psychometric properties. The study included a three translators fluent in English, which made independent translations, translators two professional judges and two experts (a neurologist and a neuropsychologist) who performed the conceptual and item equivalence, semantic, and operational. 24 healthy subjects responded to the pretest, which consisted in the investigation of understanding and difficulty of the adapted version of the Visual Reproduction I and II. In the second study, participated in 62 healthy adults and 29 adults with stroke in the right hemisphere in the territory of the middle cerebral artery. All subjects were aged between 20 and 59 years and the responses were considered for analysis of reliability and validity based on statistical analysis of the classical theory (ANOVA, ANCOVA, Cronbach\'s alpha, and Pearsons correlation) and the modern theory testing (Item Theory Response IRT, the model of one parameter or Rasch method). The process of analyzing the psychometric properties following the methodology recommended by the American Educational Research Association [AERA], American Psychological Association [APA] and the National council on education measure in [NCME], 2008 - indicated by the publisher responsible for the copyright of the WMS-IV. In the reliability analysis, we investigated the internal consistency (Cronbach\'s alpha) and temporal stability (Pearsons correlation). To investigate the validity, were considered: the processes of response, the internal structure (Pearsons correlation and IRT), the relationship with other tools (Mini Mental State Exam- MMSE and Rey-Osterrieth Complex Figure Test (ROCF).) and the relationship with external variables (stroke in the right hemisphere in the territory of the middle cerebral artery, compared to healthy controls). The index of internal consistency overall subtest was 0.92 and test-retest stability showed significant correlation, except with the task of delayed recall. These results are similar to the original study, showing thus their equivalence. The results of the validity study showed that there is equivalence in terms of investigating the internal structure and content. Pearson\'s correlation coefficient showed that all the figures obtained significant correlation (p <0.001) and further correlated with each moment congruently the task. In investigating the internal structure by the Rasch method has been shown that the test is one-dimensional that the progression of theta over the response categories was as expected by the model, and show that the figure is the easier task of Figure 1 - immediate recall, and is harder to figure 5- for delayed recall. The theta correlation coefficients were greater than 0.5, showing good correlation. On the map of people-items showed that the variables tended to evaluate the construct at levels below the skill of the subjects, suggesting the need for items assessing higher levels of the construct. In the analysis of validity considering other measures, the total score of immediate recall and delayed recall correlated with the total of memory task of the Rey complex figure copy. The copy of the Visual Reproduction correlated with copy of Rey-Osterrieth Complex Figure Test (ROCF). The task of ROCF immediate recall of the total score and delayed recall correlated with total MMSE. Covariance analysis showed that education exercises influences on scores of the RV. So, after controlled the variable schooling, was evident that the controls performed better than patients with stroke on all Visual Reproduction subtest. The qualitative analysis via scaling contrast scores, shown that low performance of patients with stroke is due the fact they recognize the item very badly, the motor control, visuo-constructive ability and ability to pay attention to details is lowered. Its can occur, may be due apraxia, resulting in lower acquisition of the information, resulting in difficulties in non-verbal episodic memory. Our results showing that the Visual Reproduction subtest of the WMS-IV was considered culturally equivalent in terms of reliability and validity and is appropriate for culture of the subjects and patients evaluated in Ribeirão Preto, valid and reliable for use in Brazil. We emphasize the need of studies regarding to normative data for this subtest.
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Intrakranielle Volumenänderungen im Magnetresonanztomogramm (MRT) und neuropsychologische Veränderungen bei Patienten mit MCI (Mild Cognitive Impairment) / Cerebral volume alterations in MRI (Magnetic Resonance Imaging) and neuropsychological alterations in patients with MCI (Mild Cognitive Impairment)Dörnte, Jan 07 November 2007 (has links)
No description available.
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Adaptação transcultural e propriedades psicométricas do subteste Visual Reproduction (Reprodução Visual I e II) da Wechsler Memory Scale - Fourth Edition (WMS-IV), (Escalas de Memória de Wechsler) para uma população do Brasil / Transcultural Adaptation of the subtest Visual Reproduction I and II of the Wechsler Memory Scale - IV (WMS-IV) (Wechsler Memory Scale) to one culture from Brazil.Carina Tellaroli Spedo 27 April 2012 (has links)
Instrumentos de avaliação da memória episódica não verbal são escassos. Além disto, consideramos a crescente necessidade de esforços para a adaptação transcultural de instrumentos de memória para nosso contexto. O subteste Visual Reproduction I e II (Reprodução Visual I e II) faz parte da Wechsler Memory Scale (WMS) e se trata de uma escala mundialmente utilizada e adaptada a diversas culturas, sendo considerada padrão ouro dentre as medidas de avaliação da memória. No presente estudo, utilizamos o subteste Reprodução Visual, da WMS na sua quarta edição (WMS-IV). O Reprodução Visual (RV) é subdividido em três domínios de investigação da memória visual (evocação imediata, evocação tardia e reconhecimento) e uma tarefa opcional para avaliação da percepção visual, habilidades construtivas e atenção aos detalhes (cópia). Além disto, o escore de cada um dos três domínios avaliados podem ser contrastados, de modo que se obtenham informações sobre a retenção, o quanto a memória é melhor ou pior do que as habilidades construtivas e, por último, o quão o sujeito evoca livremente ou precisa de pistas para evocar a informação aprendida. Esta versão da WMS-IV é uma revisão da WMS-III, cujos estudos resultaram em algumas alterações metodológicas e de conteúdo, no sentido de facilitar a análise dos resultados, diminuir os vieses de aplicação e correção. Desta forma, para atingir os propósitos desta pesquisa foram realizados dois estudos: o Estudo 1 teve como objetivo realizar a adaptação transcultural do subteste Visual Reproduction I and II - Wechsler Memory Scale IV (WMS-IV) e apresentar uma versão para uso preliminar no Brasil. O estudo 2 consistiu na avaliação das suas propriedades psicométricas. Participaram do estudo 1 três tradutores com fluência no inglês, que realizaram traduções independentes, dois tradutores profissionais e dois juízes especialistas (um neurologista e uma neuropsicóloga). Os juízes especialistas e um tradutor profissional investigaram a equivalência conceitual, semântica e operacional dos itens. Uma amostra de 24 sujeitos saudáveis responderam ao pré-teste, que consistiu na investigação da compreensão e dificuldade da versão adaptada do Reprodução Visual I e II. No estudo dois, participaram 62 adultos saudáveis e 29 adultos com Acidente vascular cerebral em hemisfério direito, no território da Artéria cerebral média (AVC-ACMHD). Os sujeitos tinham idade entre 20 e 59 anos e as respostas foram consideradas para análises de confiabilidade e validade baseadas em análises estatísticas da teoria clássica (ANOVA, ANCOVA, coeficiente alfa de Cronbach, e correlação de Pearson) e da teoria moderna de testagem (Teoria de Resposta ao Item (TRI) através do modelo de um parâmetro ou método de Rasch). O processo de análise das propriedades psicométricas utilizou a metodologia recomendada pelo American Educational Research Association [AERA], American Psychological Association [APA] e o National council on measure in education [NCME], 2008 indicada pela editora responsável pelos direitos autorais do WMS-IV. Na confiabilidade, foi investigada a consistência interna (coeficiente alfa de Cronbach) e a estabilidade temporal (correlação de Pearson). Na investigação da validade, foram investigados: os processos de resposta, a estrutura interna (correlação de Pearson, Teoria de resposta ao Item pelo método de Rash), a relação com outros instrumentos (Mini Exame do Estado Mental - MEEM e Figuras Complexas de Rey) e a relação com variáveis externas (AVC-ACMHD comparados a controles saudáveis). O índice de consistência interna do subteste foi de 0,92 e a estabilidade teste-reteste mostrou correlação significativa, exceto com a tarefa de evocação tardia. Esses resultados são similares aos do estudo original, sendo, portanto caracterizada a sua equivalência. Os resultados do estudo de validade mostraram que há equivalência em termos de conteúdo.A investigação da estrutura interna pelo coeficiente de correlação de Pearson evidenciou que todas as figuras obtiveram correlação significativa (p<0,001). Ainda mais: correlacionaram-se congruentemente durante toda a tarefa. Na investigação da estrutura interna pelo método de Rasch foi evidenciado que o teste é unidimensional, que a progressão de theta ao longo das categorias de resposta foram como o esperado pelo modelo. A TRI mostrou que a figura mais fácil é a figura 1 da tarefa de evocação imediata e a mais difícil é a figura 5 de evocação tardia. Os índices de correlação theta foram superiores a 0,5, mostrando correlação. No mapa de pessoas-itens as variáveis tenderam a avaliar o constructo em níveis inferiores ao de habilidade dos sujeitos, sugerindo a necessidade de itens avaliando níveis mais altos do constructo. Na análise de validade considerando outras medidas a tarefa de evocação imediata o escore total e evocação tardia apresentaram correlação com o total da tarefa de memória das figuras complexas de Rey. As tarefas de cópia correlacionaram-se com o total de cópia do teste das figuras complexas de Rey. A tarefa de evocação imediata o escore total e evocação tardia apresentaram correlação com o total do MEEM. A análise de covariância mostrou que a escolaridade exerce influência nos escores do RV. Assim, depois de controlada a escolaridade foi evidenciado que os controles tiveram melhor desempenho em todas as tarefas do RV, quando comparados aos pacientes com AVC-ACMHD. Na análise qualitativa, através do escalonamento e contraste dos escores, foi observado que o baixo desempenho dos pacientes com AVC se deve ao fato de que esses pacientes percebem muito mal o item, com pior controle motor, habilidade visuo-construtiva e capacidade de prestar atenção a detalhes. O resultado é uma menor aquisição da informações e as conseqüências são dificuldades na memória episódica não verbal . Os nossos resultados foram demonstrativos de que o RV da WMS- IV, além de culturalmente equivalente em termos de confiabilidade e validade, é adequado para a cultura dos sujeitos e pacientes avaliados em Ribeirão Preto, preciso e válido para o uso no Brasil. Saliente-se a necessidade de estudos normativos com esse subteste. / Tools for evaluation of non-verbal episodic memory are scarce. Furthermore, we consider the increasing need for efforts to cross-cultural adaptation of instruments of memory for our context. The subtest Visual Reproduction I and II is part of the Wechsler Memory Scale (WMS), and it is used worldwide scale and adapted to different cultures, and is considered the gold standard among assessment measures of memory. In the present study, we use the Visual Reproduction subtest of WMS in its fourth edition (WMS-IV). The Visual Reproduction (VR) is subdivided into three fields of research in visual memory (immediate recall, delayed recall and recognition) and an optional task to assess visual perception, constructive abilities and attention to detail (copy). Moreover, the score of each of the three domains can be contrasted evaluated in order to obtain information on retention, and the memory is better or worse than the constructive abilities, and finally, how the subject refers freely or need tracks to evoke the information learned. This version of the WMS-IV is a review of the WMS-III, whose studies have resulted in some changes in methodology and content, to facilitate the analysis of results, lower camest application and correction. Thus, to obtain the purposes of this research were carried out two studies: Study 1 was aimed at making cross-cultural adaptation of the subtest \"Visual Reproduction I and II - Wechsler Memory Scale - IV (WMS-IV)\" and present a version for use preliminary in Brazil and the second study consisted of an evaluation of its psychometric properties. The study included a three translators fluent in English, which made independent translations, translators two professional judges and two experts (a neurologist and a neuropsychologist) who performed the conceptual and item equivalence, semantic, and operational. 24 healthy subjects responded to the pretest, which consisted in the investigation of understanding and difficulty of the adapted version of the Visual Reproduction I and II. In the second study, participated in 62 healthy adults and 29 adults with stroke in the right hemisphere in the territory of the middle cerebral artery. All subjects were aged between 20 and 59 years and the responses were considered for analysis of reliability and validity based on statistical analysis of the classical theory (ANOVA, ANCOVA, Cronbach\'s alpha, and Pearsons correlation) and the modern theory testing (Item Theory Response IRT, the model of one parameter or Rasch method). The process of analyzing the psychometric properties following the methodology recommended by the American Educational Research Association [AERA], American Psychological Association [APA] and the National council on education measure in [NCME], 2008 - indicated by the publisher responsible for the copyright of the WMS-IV. In the reliability analysis, we investigated the internal consistency (Cronbach\'s alpha) and temporal stability (Pearsons correlation). To investigate the validity, were considered: the processes of response, the internal structure (Pearsons correlation and IRT), the relationship with other tools (Mini Mental State Exam- MMSE and Rey-Osterrieth Complex Figure Test (ROCF).) and the relationship with external variables (stroke in the right hemisphere in the territory of the middle cerebral artery, compared to healthy controls). The index of internal consistency overall subtest was 0.92 and test-retest stability showed significant correlation, except with the task of delayed recall. These results are similar to the original study, showing thus their equivalence. The results of the validity study showed that there is equivalence in terms of investigating the internal structure and content. Pearson\'s correlation coefficient showed that all the figures obtained significant correlation (p <0.001) and further correlated with each moment congruently the task. In investigating the internal structure by the Rasch method has been shown that the test is one-dimensional that the progression of theta over the response categories was as expected by the model, and show that the figure is the easier task of Figure 1 - immediate recall, and is harder to figure 5- for delayed recall. The theta correlation coefficients were greater than 0.5, showing good correlation. On the map of people-items showed that the variables tended to evaluate the construct at levels below the skill of the subjects, suggesting the need for items assessing higher levels of the construct. In the analysis of validity considering other measures, the total score of immediate recall and delayed recall correlated with the total of memory task of the Rey complex figure copy. The copy of the Visual Reproduction correlated with copy of Rey-Osterrieth Complex Figure Test (ROCF). The task of ROCF immediate recall of the total score and delayed recall correlated with total MMSE. Covariance analysis showed that education exercises influences on scores of the RV. So, after controlled the variable schooling, was evident that the controls performed better than patients with stroke on all Visual Reproduction subtest. The qualitative analysis via scaling contrast scores, shown that low performance of patients with stroke is due the fact they recognize the item very badly, the motor control, visuo-constructive ability and ability to pay attention to details is lowered. Its can occur, may be due apraxia, resulting in lower acquisition of the information, resulting in difficulties in non-verbal episodic memory. Our results showing that the Visual Reproduction subtest of the WMS-IV was considered culturally equivalent in terms of reliability and validity and is appropriate for culture of the subjects and patients evaluated in Ribeirão Preto, valid and reliable for use in Brazil. We emphasize the need of studies regarding to normative data for this subtest.
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Cultural Biases in the Weschler Memory Scale iii (WMS-iii)Less, Adam David 01 January 2012 (has links)
The Wechsler Memory Scale –iii is the newest version of a six-decade old neuropsychological inventory. Since its conception, the Wechsler Memory Scale has been highly utilized by practitioners to accurately assess various memory functions in adult subjects. Revisions made within this inventory include the Faces I subtest, a facial recognition scale, which was added in order to strengthen the instrument’s accuracy at measuring episodic memory. Facial recognition, both cross-race and within-race, has been researched extensively and consistent biases have been found between race of test taker and cross-racial identification. Theories of exposure/contextual interaction (environment) and biological foundations have been the subject of study in the past in order to determine from where these racial identification deficits stem. The current study focuses on revealing bias in the Faces I subtest, regarding to an unequal distribution of racially representative faces in the testing materials. Eighty-eight college students were recruited to view forty-eight pictured faces from the Faces I subtest and determine the racial category to which the pictured face belonged. The subjects’ categorical responses were the basis for calculating a percent agreement score for racial category of each face. It was determined, using the results of subjects’ responses, that the Faces I subtest contained an unequal distribution of racially representative faces in both the Target and Interference testing material. This confirmed the presence of an inherent bias within the subscale. The implications of memory accuracy for the WMS-iii are discussed as it relates to different fields of study, but none more directly than the criminal justice system. Eyewitness testimony is a pivotal evidentiary tool in the criminal justice system, and ramifications of cross-racial identification deficits and biases in the tools to accurately assess memory are increasingly bringing this once heavily relied upon tool into question.
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