Concepts from the logic of modalities are applied to the life cycle to elaborate a new theory of adult and late-life development. Four logical modalities are described, each cognitively and emotionally governing discrete periods of life. It is hypothesized that optimal development in adult life includes explicit awareness of these modalities. (RH)

Adolescents often pursue learning opportunities both in and outside school once they become interested in a topic. In this paper, a learning ecology framework and an associated empirical research agenda are described. This framework highlights the need to better understand how learning outside school relates to learning within schools or other…