Health belief models - predict and explain behavior by focusing on individual attitudes. In general these theories suggests individuals can make changes that can address health issues: e. g. Self-regulation model: based on motivational characteristics of an individual. Individual sets the goal by themselves, monitors own progress and sets own system of reward: progress be encouraged by someone outside that offers support, but the goals and individual behaviors will be dictated by the individual. Lately influenced by personal history and by individual social influences. More experience, wiser, maturation: accumulating knowledge and exposure to stimuli. Some people would related to more physical: wrinkles. Stronger versus weak getting stronger early in the live course: e. g. bones get stronger till 30 and declines. Can be thought of as a set of lenses for viewing actions and interactions. To help us make sense of what we observe.