The Center for Gifted Education (Center) at William & Mary has provided diverse enrichment programs for high-ability students since 1988. With an aspiration to serve financially disadvantaged students, the Center developed and hosted a summer residential enrichment program in STEM areas. Camp Launch, for low-income, high-ability middle school…

Identifying change at the individual level is an important goal for researchers, educators, and clinicians. We present a set of statistical procedures for identifying individuals who depart from a normative change. Using Latent Change Scores models (LCS), we illustrate how the Individual Likelihood computed from a statistical model for change…

Research focused on student belonging has sometimes used available measures in a unidimensional way despite evidence of multidimensionality in these scales. This study introduces a new unidimensional measure of school belonging that is psychometrically robust with preliminary evidence of construct validity that we call the Simple School Belonging…

School motivation and attachment typically decline after the transition to middle school. According to the stage-environment fit approach, extracurricular activities are supposed to promote motivation. However, research has shown that the effects depend on the quality of the activities, which usually is measured by assessing students' individual…

In this article, a heterogeneous latent growth curve model for modeling heterogeneity of growth rates is proposed. The suggested model is an extension of a conventional growth curve model and a complementary tool to mixed growth modeling. It allows the modeling of heterogeneity of growth rates as a continuous function of latent initial status and…