Julian Rotter

Rotter suggested that the expected effect or outcome of the behavior has an impact on motivation of people to engage in that behavior. People wish to avoid negative consequences, while desiring positive results or effects. If one expects a positive outcome from a behavior, or thinks there is a high probability of a positive outcome, then they will be more likely to engage in the behavior. The behavior is reinforced, with positive outcomes, leading a person to repeat the behavior. This social learning theory suggests that behavior is influenced by social context or environmental factors, and not psychological factors alone.