Ralph W. Tyler's paper on "Curriculum Development and Research" contains examples of research findings which were or were not used in efforts to change or develop curriculum. The roles, use, and importance of action research, formulation of objectives, planning and organization of learning experiences, program assessment, relationship between research and practice, and the improvement of research utilization are also discussed. Barry M. Franklin's response to Tyler's paper suggests that the relationship between curriculum research and practice is more complex and ambiguous than Tyler's portrayal. In another response to Tyler's paper, Robert S. Gilchrist adds that curriculum development should be undergirded with an understanding of the needs of human beings and that those affected by the curriculum should be involved in its development. (CJB)