Research leadership, a much neglected area of educational leadership and management, is disadvantaged by having an underdeveloped and inadequate knowledge base. This article represents a contribution to this knowledge base through a conceptual analysis. It presents as propositional knowledge an original theoretical model of the componential…

Defines life-span developmental psychology as the study of constancy and change in behavior throughout the life course. Advances metatheoretical view regarding development. Stresses focus on the dynamic and continuous interplay between growth (gain) and decline (loss). Examines structural contextual factors and study of range of plasticity in…