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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Made available in DSpace on 2016-04-04T18:27:38Z (GMT). No. of bitstreams: 1 Marcelo Gulini Chiodi.pdf: 363388 bytes, checksum: 0578a0c625e8841b1da092c135b88eb8 (MD5) Previous issue date: 2007-12-14 / Pontif?cia Universidade Cat?lica de Campinas / The study of intellectual evaluation has shown great diversity through out the time. Currently, the theory recognized as the most extensive to explain the mental functioning is the C-H-C (Cattell-Horn-Carroll). Among the tests internationally availables, the only one that meets this proposal is the theoretical battery Woodcock Johnson III (WJ - IIII). Accordingly, the objective of this study was to verify the convergence validity battery of Cognitives Abilities Woodcock-Johnson III, comparing it with the Wechsler Intelligence Scale for Children - WISC-III, already validated for our reality. The sample was composed of 30 students from public school of Primary and Secondary Education, being 15 men and 15 women aged between 13 and 15 years. It was applied to the participants, with parents permission, the two sets of Cognitive Abilities WJ-III and WISC-III. The results were analyzed according to the Pearson correlation and it was performed the Analysis of Variance between gender and age for each instrument. The results pointed to a significant correlation between the total score of Woodcock and the total score in the WISC of 0,865, between Woodcock and the scale implementation 0,766 and the scale verbal 0,843. As for the Analysis of Variance, in the instrument WISC-III there was no significant difference in age and in subtestes Complete Figures and Cubes Sex x Age to the subtest vocabulary. In addition, for the instrument WJ-III there were differences of Sex X Age only for subtest Verbal Understanding. The Battery Woodcock Johnson III is considered the most complete in order to allow the evaluation of different differents cognitive abilities of the model C-HC, and therefore, according to the presents results, the battery WJ-III can be used in Brazil to replace the WISC - III. / O estudo da avalia??o intelectual tem apresentado grande diversidade atrav?s dos tempos. Atualmente, a teoria reconhecida como sendo a mais ampla para explicar o funcionamento mental ? a C-H-C (Cattell-Horn-Carroll) . Dentre os testes dispon?veis internacionalmente, o ?nico que atende a esta proposta te?rica ? a Bateria Woodcock-Johnson III (WJ-IIII). Neste sentido, o objetivo deste trabalho foi verificar a validade convergente da Bateria de Habilidades Cognitivas Woodcock Johnson-III, comparando-a com a Escala Wechsler de Intelig?ncia para Crian?as WISC- III, que j? apresenta evidencias de validada para a nossa realidade. A amostra foi composta por 30 estudantes de escola p?blica do Ensino Fundamental e M?dio, sendo 15 homens e 15 mulheres com idades entre 13 e 15 anos. Foram aplicadas nos participantes, com a autoriza??o dos pais, as duas baterias de Habilidades Cognitivas WJ-III e WISC-III. Os resultados obtidos foram analisadas segundo a correla??o de Pearson e foi realizada a An?lise de Vari?ncia entre sexo e idade para cada instrumento. Os resultados apontaram para uma correla??o significativa entre a pontua??o total do Woodcock e a pontua??o total no WISC de 0,865, entre o Woodcock e a escala execu??o 0,766 e com a escala verbal 0,843. Com rela??o a An?lise de Vari?ncia, no instrumento WISC-III houve diferen?a significativa da Idade nos subtestes Completar Figuras e Cubos e de Sexo X Idade para o subteste Vocabul?rio. J? com o instrumento WJ-III houve diferen?as de Sexo X Idade somente para o subteste Compreens?o Verbal. Tais dados nos indicam que a Bateria de Habilidades Cognitivas Woodcock-Johnson- III- WJ-III permite uma avalia??o e um diagn?stico mais detalhado das v?rias habilidades cognitivas, podendo enriquecer ainda mais as possibilidades de instrumentos para avalia??o intelectual.

Research reveals that the level as well as the quality of education plays a role in the determination of an individual's intellectual capacity. Substantial differences in quality of education for black and white individuals were experienced in South Africa due to Apartheid. Compared to the traditionally white Private and Model C schools, Township/ DET schools had limited resources, as well as a separate syllabus and examination system, a situation that has not improved substantially since democratisation in 1994. Research on black South African adults with the WAIS-III has confirmed significant influences on IQ in association with exposure to either such advantaged (Private/Model C) schooling, or disadvantaged (Township/DET) schooling. However to date there has been no published research on the use of the Wechsler intelligence tests on a black South African child population similarly stratified for quality of education. Therefore, for the purposes of this study, the latest Wechsler Intelligence Scale for Children (WISC-IV) was administered to a sample of 36 Grade 7 learners between the ages of 12-13 (mean 13.01 years), stratified for quality of education to form three comparative groups. Data analyses revealed significant differences on the WISC-IV Factor Indices and Full Scale IQ with the English speaking Private/Model C school group performing the best, followed by the Xhosa speaking Private/ Model C school group, and the Xhosa speaking Township/ DET school group performing the worst. This continuum of lowering is understood to occur abreast of a continuum of decreased exposure to relatively advantaged education. These normative indications are considered to have vital implications for the use of the WISC-IV in the South African cross-cultural situation where vastly differential educational opportunities continue to exist.

his study builds on South African cross-cultural research which demonstrated the importance of careful stratification of multicultural/multilingual normative samples for quality of education in respect of English and African language (predominantly Xhosa) speaking adults and children tested with the WAIS-III and WISC-IV, respectively. The aim of the present study was to produce an expanded set of preliminary comparative norms on the WISC-IV for white and coloured Afrikaans, white English and black Xhosa speaking Grade 7 children, aged 12 to 13 years, stratified for advantaged versus disadvantaged education. The results of this study replicate the findings of the prior South African cross-cultural studies in respect of quality of education, as groups with advantaged private/former Model C schooling outperformed those with disadvantaged former DET or HOR township schooling. Furthermore, a downward continuum of WISC-IV IQ test performance emerged as follows: 1) white English advantaged (high average), 2) white Afrikaans advantaged and black Xhosa advantaged (average), 3) coloured Afrikaans advantaged (below average), 4) black Xhosa disadvantaged (borderline), and 5) coloured Afrikaans disadvantaged (extremely low). The present study has demonstrated that while language and ethnic variables reveal subtle effects on IQ test performance, quality of education has the most significant effect – impacting significantly on verbal performance with this effect replicated in respect of the FSIQ. Therefore caution should be exercised in interpreting test results of individuals from different language/ethnic groups, and in particular those with disadvantaged schooling, as preliminary data suggest that these individuals achieve scores which are 20 – 35 points lower than the UK standardisation.