The changing role of research in curriculum development since the late 1950's is reviewed. Factors are discussed that have affected the prevailing attitudes toward research and its value, including its role in fields other than education and the mixed success with which various research and development models have met in education. Particular…

This article, originally published in 1968, examines learning disabilities from the perspectives of history, disciplines (calling for interdisciplinary convergence), education (viewing learning disabilities as a concept rather than a category), teacher preparation, province (evaluating the appropriateness of various delivery systems), and time…