1. Structures, Stages, and Sequences in Cognitive Development Stages; Sequences; 2. Comparative and Psychobiological Perspectives on Development; Rodent Studies; Primate Studies; Surrogate-Infant Studies; Conclusion; 3. The Concept of Affordances in Development: The Renascence of Functionalism; Functionalism and the Concept of Affordance; Antecedents of the Concept of Affordance; Examples of Affordance; The Developmental Study of Affordances; Conclusion; 4. Development and the Dialectic: The Need for a Systems Approach; General Systems Theory; System Properties; Evolution and Dialectics; 5. Epidemiological-Longitudinal Approaches to the Study of Development; Characteristics of Epidemiological and Longitudinal Approaches; Patterns of Behavior; Sex Differences; Developmental Changes; Causal Factors; Conclusions; 6. Commentary; Complexity in Development and Developmental Studies; Organization and Relationships in Development; Culture, Context, and the Concept of Development; List of Contributors; Author Index; Subject Index;