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BREV, standing for the French "Batterie Rapide d'Evaluation des Fonctions Cognitive", is a rapid test to screen children with disorders of higher functions and to define the patterns of these disorders. We describe here two phases of the validation procedure. The first phase consisted in measuring the internal validity of the scale by testing 500 normal school children free of disability. The validation process provided appropriate values for each of the 18 subtests assessing cognitive functions (oral language, non-verbal abilities, attention and memory, education and memory, educational achievment) in ten age groups from 4 to 8 years. All subtests with the same content for any revealed values which increased significantly with age. Inter-reliability was tested by retesting 70 children. The second phase of validation, comparing BREV results and those from a large classical neuropsychological battery, tested specificity and sensitivity. Each of the BREV subtests were correlated with the similar subtest of the classical battery. Correlations between verbal and non-verbal scores and verbal and performance intellectual quotient (Weschler scale) were very significant. Sensitivity and specificity of BREV were above 75p.100;. This confirms the reliability of this battery for children, with good sensitivity and specificity. BREV is a reliable test, with carefully established norms, appropriate for preschool and school-age children.
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