Complex data structures are ubiquitous in psychological research, especially in educational settings. In the context of randomized controlled trials, students are nested in classrooms but may be cross-classified by other units, such as small groups. Furthermore, in many cases only some students may be nested within a unit while other students may…

The current research extended the three-factor (mastery, performance-approach, and performance-avoidance) measure of achievement goals in a work domain to the four-factor conceptualization (in a 2 x 2 framework) by adding items to represent mastery-avoidance goals. Confirmatory factor analysis was conducted on two independent samples to evaluate…