Psychologist Albert Bandura developed the concept of self-efficacy, which refers to an individual's belief in their ability to succeed in specific situations. Bandura identified four main sources that influence self-efficacy: mastery experiences, vicarious experiences, social persuasion, and emotional states. High self-efficacy is associated with benefits like resilience, healthy habits, better job performance, and academic achievement. Self-efficacy is measured using scales like the General Self-Efficacy Scale, with higher scores indicating greater self-efficacy.