The idea for this book grew out of the conference "Motivational Psychology of Ontogenesis" held at the Max Planck Institute for Human Development in Berlin, Germany, in May 1998. This conference focused on the interface of development and motivation and therefore brought together scholars from three major areas in psychology - developmental, motivational and lifespan.This combination of fields represents the potential influence of development on motivation and the potential role motivation plays in development and its major contexts of family, work and school. Thus, contributors were chosen to apply motivational models to diverse settings of human everyday life and in various age groups across the life span, ranging from early childhood to old age.