Separating the effect of attachment figure-domain units in IPPA-R using the correlated trait and correlated method minus one model
Using the correlated trait and correlated method minus one model (CT-C(M-1)), this study separated trait effects and trait method-specific effects of attachment figure-domain units in the IPPA-R. The model fit of the proposed model was examined and compared with those of other alternative models using a sample of 1290 adolescents from China. Results indicated that models specifying attachment domains across relationships as methods fitted data better than models specifying attachment domains across relationships as traits in the CT-C(M-1) model. In addition, the factor representing attachment-with-mother was found to significantly predict anxiety, stress, and social efficacy, whereas the attachment-with-father factor was a significant predictor of social self-efficacy, both of which supported the differential functioning of mother and father. Results suggest that the CT-C(M-1) model is a promising approach to separate the unique contributions of different attachment figures and relationship attachment domain-specific effect measured by IPPA-R.