Jean Piaget was one of the most salient and inspirational figures in psychological and educational research this century. He was prolific, authoring or editing over eighty books and numerous journal papers which have spawned a huge and fertile continuation of hisresearch over the decades. A major component of any course on children's psychological development and a research tradition that is expanding, scholars need access to the original texts rather than relying on secondhand accounts. Jean Piaget: Selected Works is a chance to acquire key original texts, most of which have been previously unavailable for several years.