Developmental theorists have struggled with defining the relations among biology, psychology, and sociocultural context, often reducing psychological functions of a person to either biological functioning or the role of sociocultural context - nature or nurture - and considering each area of human development separately. New Perspectives on Human Development addresses fundamental questions of development with a unified approach. It encompasses theory and research on cognitive, social and moral, and language and communicative development, in various stages of life, and explores interdisciplinary perspectives. New Perspectives on Human Development revisits old questions and applies original empirical findings, offering new directions for future research in the field.