Growth mixture modeling (GMM) is a method for identifying multiple unobserved sub-populations, describing longitudinal change within each unobserved sub-population, and examining differences in change among unobserved sub-populations. We provide a practical primer that may be useful for researchers beginning to incorporate GMM analysis into their…

Reviews empirical studies of cognitive self-efficacy from childhood through old age, addressing issues of definition and measurement related to the self-efficacy construct. Integrates findings of research on self-efficacy and establishes generalizations regarding the relationship of self-efficacy to choice and goal-setting behaviors, a sense of…

Presents an overview of the topics of planning and control to provide a context for the articles in this issue of the journal. Considers development across the life span, subgroup variations, and correlates. Also explores potential linkages between planning and control. (MM)

Analyzes multiple components of planning, including problem representation, goal selection, a decision to plan, strategy choice, strategy execution, and monitoring. Analyzes three tasks typically used to study planning: the Tower of Hanoi; errand scheduling; and story comprehension. Argues that the components required to perform a planning task…

Discusses research on human development from an interactional perspective; methodological problems connected with interindividual differences in biological maturation (using empirical studies from a longitudinal program); and major implications for further development research in an interactional perspective. (Author/BE)