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Identifying Signs of Dyslexia Test: Evidence of Criterion Validity1 1 Support: Article derived from the doctoral thesis of the first author under the supervision of the second, defended in 2016, in the Graduate Program in Psychology at the Pontifícia Universidade Católica de Campinas. Financial support from the National Council for Scientific and Technological Development (CNPq), case No. 140281/2014-2.

Teste para Identificação de Sinais de Dislexia: Evidências de Validade de Critério

Test para la identificación de Señales de Dislexia: Evidencia de la Validez de Criterio


In Brazil, there is a lack of valid instruments for screening for Developmental Dyslexia (DD) and so the aim of this study was an in-depth investigation of evidence of validity based on the relations with external variables for the Identifying Signs of Dyslexia Test (TISD). More specifically, it seeks to investigate the validity of the criterion, i.e. whether such instruments would be capable of identifying this diagnosis. The research involved comparing two samples: (a) children with DD diagnosis (n = 15) and (b) children without complaints of reading and writing difficulties (n = 146). It was found that in all the subtests of which the instrument is made up (reading, writing, visual attention, calculation, motor skills, phonological awareness, rapid naming, short term memory) there were significant differences between the groups, and in the test total. The results suggest that the TISD was able to identify the group with DD, evidencing the validity of the criterion for this instrument.

psychometry; learning; neuropsychology; psychological evaluation

Universidade de São Paulo, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Programa de Pós-Graduação em Psicologia Av.Bandeirantes 3900 - Monte Alegre, 14040-901 Ribeirão Preto - São Paulo - Brasil, Tel.: (55 16) 3315-3829 - Ribeirão Preto - SP - Brazil