How do you achieve behavior change in challenging circumstances? This course explores that question, first by examining theories of behavior change commonly used in nutrition and public health and then with an in-depth introduction specifically to the Positive Deviance Approach. In the first half, several individual-based, social-based, organization-based and eco-social theories will be explored, with an emphasis on understanding of core theory concepts and issues in measurement. Building on this base, the second half will cover the concept, theory, history and application of PD. Students will develop their own problem statement and map out the steps required to apply the PD approach to their identified problem. By the end of this course, students will understand the steps involved in the PD process, acquire basic skills to complete step one of the PD process, and develop a proposal to design a PD inspired project plan. Interactive activities and assignments will teach students when to apply each of the behavior change methods.