High Quality Content by WIKIPEDIA articles! Positive Adult development is a form of adult development. It can be divided into at least six parts: hierarchical complexity (orders, stages), knowledge, experience, expertise, wisdom, and spirituality. The achievement of complete development at the end of adolescence was suggested by Freud, Piaget, and Binet among others. Research in Positive Adult Development questions not only that development ceases after adolescence, but also the notion of decline after late adolescence postulated by many gerontologists. Positive development does occur during adulthood. Recent studies indicate that such development is useful in predicting things such as an individual's health, life satisfaction, and degree of contribution to the society.