The purpose of this study was to attempt to train the horizontality concept in a group of first graders who were non-operational on the horizontality concept but transitional on what Piaget has termed the precursor concepts of distance and length conservation. There were two groups of subjects (training and control), all of whom had failed a…

This article explains a movement-based approach to the development of language in children with deaf-blindness. This approach uses the salient features of individuals or objects to stimulate use of language in the immediate environment, and later to refer to persons or concepts in a more abstract fashion. It stresses the use of structure and a…

This book is a compilation of literature and research concerning how children learn. The first chapter is a historical introduction to research in learning that summarizes the major developments of the last 100 years and relates these developments specifically to children's learning. The main body of the text is divided into six major topics: (1)…