Eight contributions address: material cocaine use and neonatal outcome; nonorganic failure to thrive; understanding and controlling violence; the role of school in prosocial development; lateralization of function; lateralized behavior organization during infancy; parent-infant interaction; and manu

Historically, explanations for the origins of behavior have vacillated be- tween nurturist and nativist camps. Nurturists emphasize environmental determinants of development, whereas nativists emphasize biological de- terminants. Contemporary develop mentalists reject such dichotomies on the assumption that the organization of behavior is driven by interac- tions between environmental and biological regulators. For example, Sameroff (1989; Sameroff & Fiese, 1989) reminds us that throughout the life span, development of the biological organism has meaning only when considered in relation to...