Behind an effective behavior intervention is a theory, or theories, that provide insight into how and why individuals behave the way they do. Below are videos and resources describing three common theories used in behavior intervention design, however this is not an exhaustive list.
Explains how attitudes, subjective norms and perceived behavioral control all contribute to an individuals behavioral intentions and actions
Explains how individuals are influenced in their behaviors by what they perceive to be normal and expected by those around them
Outlines 6 stages an individual goes through when undergoing a behavior change that can be used to formulate intervention strategies