The Hyperactive Child: Characteristics, Treatment, and Evaluation of Research Design / Gladys B. Baxley, Judith M. LeBlanc -- Peripheral and Neurochemical Parallels of Psychopathology: A Psychophysiological Model Relating Autonomic Imbalance to Hyperactivity, Psychopathy, and Autism / Stephen W. Porges -- Constructing Cognitive Operations Linguistically / Harry Beilin -- Operant Acquisition of Social Behaviors in Infancy: Basic Problems and Constraints / W. Stuart Millar -- Mother-Infant Interaction and its Study / Jacob L. Gewirtz, Elizabeth F. Boyd -- Symposium on Implications of Life-Span Developmental Psychology for Child Development. Introductory Remarks / Paul B. Baltes -- Theory and Method in Life-Span Developmental Psychology: Implications For Child Development / Aletha Huston-Stein, Paul B. Baltes -- The Development of Memory: Life-Span Perspectives / Hayne W. Reese -- Cognitive Changes During the Adult Years: Implications for Developmental Theory and Research / Nancy W. Denney, John C. Wright -- Social Cognition and Life-Span Approaches to the Study of Child Development / Michael J. Chandler -- Life-Span Development of the Theory of Oneself: Implications for Child Development / Orville G. Brim Jr. -- Implications of Life-Span Developmental Psychology for Childhood Education / Leo Montada, Sigrun-Heide Filipp.