In the propose model, expectations of personal efficacy are derived from four principal sources of information: performance accomplishments, vicarious experience, verbal persuasion, and physiological states. The more dependable the experiential sources, the greater are the changes in perceive self-efficacy. A number of factors are identified as influencing the cognitive processing of efficacy information arising from enactive, vicarious, exhortative, and emotive sources.
Albert Bandura. Self-efficacy: Toward a unifying theory of behavioral change. Psychological Review, 84(2):191–215, 1977. doi:10.1037/0033-295X.84.2.191.
@article{bandura_selfefficacy_1977,
author = {Bandura, Albert},
doi = {10.1037/0033-295X.84.2.191},
issn = {1939-1471, 0033-295X},
journal = {Psychological Review},
language = {en},
number = {2},
pages = {191-215},
shorttitle = {Self-Efficacy},
title = {Self-Efficacy: {{Toward}} a Unifying Theory of Behavioral Change.},
volume = {84},
year = {1977}
}