Research in human development often relies on composites, that is, composed variables such as indices. Their composite nature renders these variables inaccessible to conventional factor-centric psychometric validation techniques such as confirmatory factor analysis (CFA). In the context of human development research, there is currently no…

To examine developmental processes, intervention effects, or both, longitudinal studies often aim to include measurement intervals that are equally spaced for all participants. In reality, however, this goal is hardly ever met. Although different approaches have been proposed to deal with this issue, few studies have investigated the potential…

The global lack of student motivation towards learning science and gender imbalance in STEM careers provided the impetus for this study, which had two key aims: (1) to examine the influence of female students' perceptions of the psychosocial learning environment on their motivation towards and self-regulation in science learning,; and (2) to…