This document reviews several theories and models of individual and social behavior and behavior change. It discusses theories focused on individual cognitive factors like the Theory of Planned Behavior and Health Belief Model. It also examines stage-based models like the Stages of Change Model. Finally, it explores social and technological perspectives like Social Practice Theory and Diffusion of Innovation Theory. The review identifies common themes across theories like consideration of individual and social influences as well as concepts of control, risk, reflection, and technology.