This volume brings together research on conceptual change from perspectives in developmental, cognitive and motivational psychology, instructional psychology and science education. The book addresses four main themes: the interplay between the learner's naive knowledge based on everyday experience and new knowledge conveyed by schooling and formal instruction; traditional cognitive views on knowledge acquisition and new socioconstructionist perspectives; constraints on knowledge acquisition and modification within specific learning domains; and instructional aspects of conceptual change and suggestions for the design of learning environments and teaching processes which promote conceptual change.