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      Características psicométricas do "Portable Tactual Performance Test" (P-TPT) em indivíduos cegos Translated title: Psychometric characteristics of the Portable Tactual Performance Test (P-TPT) in blind individuals

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          Abstract

          A percepção háptica é uma das bases fundamentais para a Avaliação Psicológica em indivíduos cegos. Todavia, o Brasil carece de instrumentos que usam esta modalidade de input sensorial na mensuração de habilidades cognitivas. O Portable Tactual Performance Test (P-TPT) é um teste que faz uso do sistema tátil da criança para avaliar a lateralização e as habilidades sensório-motoras, localização espacial, interconexão cerebral de informações entre os dois hemisférios e capacidade psicomotora comparada. Com o objetivo de analisar se este instrumento será eficaz nas mensurações propostas dentro da realidade brasileira, fizemos a aplicação em uma amostra de 32 crianças portadoras de deficiências visuais congênitas do Instituto Benjamin Constant no Rio de Janeiro. Analisamos os dados coletados com base em princípios da Teoria Clássica de Testes (TCT) sob os parâmetros da Psicometria estabelecidos na literatura. Utilizamos dois diferentes métodos de análise: Análise Fatorial Exploratória (AFE), e Homogeneidade do teste através do coeficiente Alfa de Cronbach. Os resultados da AFE revelaram 4 diferentes fatores correspondendo ao número de tarefas do teste. Os itens ficaram dentro de seus respectivos fatores, mostrando boas cargas fatoriais que variaram entre 0,41 e 0,92. Quanto à Homogeneidade, os coeficientes Alfa de Cronbach ficaram acima de 0,90 mostrando boa consistência estrutural do teste. Através destes resultados, discutimos as características psicométricas do P-TPT e avaliamos se o teste terá valor na Avaliação Psicológica em crianças cegas no Brasil. © Cien. Cogn. 2012; Vol. 17 (1): 083-093.

          Translated abstract

          One of the fundamental basis for psychological assessment in blind individuals is the haptic perception. However, Brazil lacks instruments that use the tactile sensorial input modality for cognitive abilities measurement. The Portable Tactual Performance Test (P-TPT) uses the children tactile system to evaluate her sensory-motor lateralization and abilities, spatial localization, cerebral interconnection of information between the two brain hemispheres and comparison of the psychomotor capability. In order to analyze if this instrument will be effective for the proposed measurement in the Brazilian reality, we assessed a sample of 32 congenital visually impaired children from Benjamin Constant Institute in Rio de Janeiro. We analyzed the collected data based in the principles of Classical Tests Theory (CTT) under the Psychometrical parameters established in the literature. We used two different methods of analyses: Exploratory Factorial Analysis (EFA), and test's homogeneity through Cronbach's Alpha Coefficient. Results of EFA revealed 4 different factors corresponding to the number of the test's tasks. Items remained inside their respective factors, showing good factorial load varying between 0,41 and 0,92. As for the test's homogeneity, the Cronbach's Alfa coefficients remained higher than 0,90 which suggests good structural consistency. By these results, we discussed the psychometric characteristics of P-TPT and evaluated if the test will have value in the Psychological Assessment of blind children from Brazil. © Cien. Cogn. 2012; Vol. 17 (1): 083-093.

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          Most cited references32

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          Coefficient alpha and the internal structure of tests

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            Remarks on the method of paired comparisons: I. The least squares solution assuming equal standard deviations and equal correlations

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              Psicometria

              L Pasquali (2009)
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                Author and article information

                Contributors
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                Journal
                cc
                Ciências & Cognição
                Ciênc. cogn.
                Instituto de Ciências Cognitivas (Rio de Janeiro )
                1806-5821
                April 2012
                : 17
                : 1
                : 83-93
                Affiliations
                [1 ] Pontifícia Universidade Católica Brasil
                [2 ] Universidade Federal do Rio de Janeiro Brasil
                [3 ] Instituto Benjamin Constant Brasil
                Article
                S1806-58212012000100007
                b511e7d4-0076-4fdb-9a87-30535abcaf52

                http://creativecommons.org/licenses/by/4.0/

                History
                Categories
                PSYCHOLOGY

                Clinical Psychology & Psychiatry
                haptic perception,psychological assessment,psychometrics,percepção háptica,avaliação psicológica,psicometria

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