This ERIC Short Report attempts to summarize the main points of "Motivation Theory," as described by Drs. Edward L. Deci and Richard M. Ryan of the University of Rochester in their paper, "Curiosity and Self-Directed Learning: The Role of Motivation in Education.""Motivation theory" research explores reasons for school-age children losing their curiosity and enthusiasm for learning. The major ideas are summarized in five sections covering: (1) three types of behavioral motivation; (2) understanding of relationships between behavior and its consequences; (3) controlling and informational aspects of rewards and communications; (4) perceived links between behavior and external recognition in schools; and (5) how a supportive atmosphere for teachers can lead to a supportive atmosphere for students. (JW)