Final answer:
Self-efficacy is an individual's belief in their own capability to complete a task. Factors that contribute to one's sense of self-efficacy include past personal performance accomplishments and expressions of confidence from others.
Step-by-step explanation:
Self-efficacy is an individual's belief in their own capability to complete a task, which may include a previous successful completion of the exact task or a similar task. Albert Bandura theorized that an individual's sense of self-efficacy plays a pivotal role in motivating behavior. Factors that contribute to one's sense of self-efficacy include past personal performance accomplishments and expressions of confidence from others. For example, if someone has achieved success in the past and has received positive feedback from others, they are more likely to have a high sense of self-efficacy.