Validation of the Self-Description Questionnaire-II with an American sample

The psychometric properties of the Self-Description Questionnaire-II (SDQ-I I) were assessed with an American middle school sample comprising 291 stude nts. Results revealed acceptable internal consistency and four-week stabili ty coefficients for all domain scores and the Total score of the instrument . The results of confirmatory factor analyses supported the convergent vali dity of the SDQ-II. Although the hypothesized factor structure provided a r easonable fit to the data, the relatively high intercorrelations among some of the SDQ-II scales raised issues related to discriminant validity. Impli cations of the findings for future research with American children are disc ussed.