Factorial invariance testing and latent mean differences for the self-description questionnaire II (short version) with indigenous and non-indigenous Australian secondary school students

This investigation reports on the cross-cultural equivalence testing of the Self-Description Questionnaire II (short version; SDQII-S) for Indigenous and non-Indigenous Australian secondary student samples. A variety of statistical analysis techniques were employed to assess the psychometric properties of the SDQII-S for both the Indigenous and non-Indigenous students. In addition, an analysis was conducted to determine whether the latent means of the self-concepts differed significantly between Indigenous and non-Indigenous male and female students. The results demonstrated that the SDQII-S held strong psychometric properties across the Indigenous and non-Indigenous Australian students. Furthermore, the analyses indicated that there were significant differences between Indigenous and non-Indigenous students for 7 of the 13 self-concept facets. Although some question could be raised as to the practical nature of these differences, the measurement equivalence of the SDQII-S for Indigenous and non-Indigenous students may allow researchers to more confidently understand the nature of varying dimensions of self-confidence for minority students from traditionally disadvantaged backgrounds.