A Reliability Generalization Study of the Self-Description Questionnaire

Abstract

The use of reliability generalization methodology promises to, among other things, inform researchers about the importance of reporting reliability coefficients and their use in result interpretation. This study presents results from a reliability generalization study of the Self-Description Questionnaire (SDQ). The average score reliabilities produced by the instrument as well as sample and instrument characteristics that may affect those reliabilities are presented. Results varied somewhat across the three SDQ instruments and their various subscales, but internal consistency estimates were generally strong for the SDQ.