Albert Bandura developed the theory of observational learning and self-efficacy. He argued that people's beliefs in their ability to exercise control over their lives influences how they behave. Self-efficacy refers to one's beliefs about their ability to organize and execute courses of action to achieve goals. It is domain specific rather than global and can be developed through mastery experiences. People with high self-efficacy are more likely to persist through difficulties. Teachers with high efficacy believe students are teachable and do not blame external factors for students' problems. Bandura also discussed how self-efficacy relates to health, athletic performance, career choices, and collective efficacy in society.