Validez incremental : un estudio aplicado con diversas fuentes informantes y medidas [Incremental Valicuty: An applied study using different informants and measurements]

The incremental validity study is an impor tant psychological assessment topic that has been not study very much from psychometrics. In this study, we analyse the children incremen tal validity reported by different informants (children, classmates, and teachers). The sample comprised 525 schoolchildren (41.3 % boys) in a longitudinal study, ranging at age from 9 to 1 4 years (12.72 mean; SD =1.57) across the three consecutives years of measurement. In order to predict the maternal behaviour, self-reported source shows the higher incremental validity over hetero-reported source. We discuss alter native methods to study the incremental validity.