This translation of an article by Vygotsky traces the major theories of periodization and evaluates these views of child development. In addition, he advances his theory of periodization that is based upon the development of the child's personality. (ST)

This paper defines the concept of the dialectic and places it within the context of a well-defined methodology, i.e. that of organicism, which contrasts markedly with the logical empiricism of much contemporary psychology. The paper then points out the relevance of a dialectical perspective for developmental psychology. (Author/CS)

Discusses the article by Lewis in this issue in the context of complex systems theory. Reviews several concepts of complex systems theory, including self-organization, entropy, phase transitions, stochastic processes, nonlinearity, and attractors. Notes that Lewis highlights the need for psychological models to treat nonlinear processes, chaotic…

Presents a model of cognition and emotion that suggests that feedback between cognition and emotion generates, maintains, and reconfigures interpretations of emotion-eliciting events at micro- and macrodevelopmental time scales and that personality and behavior self-organize in response to fluctuations in perception or cognition and trace…