Self-efficacy arises from the gradual acquisition of complex cognitive, social, linguistic, or physical skills through experiences (Bandura, 1982). Self-efficacy has three dimensions: 1) magnitude applies to the level of task difficulty that a person believes he or she can attain; 2) strength refers to whether the conviction regarding magnitude is strong or weak; 3) generality indicates the degree to which the expectation is generalized across situations (Bandura, 1977, by Gist, 1987). Self-efficacy is interrelated to, or mediated by, other individual and situational variables (Gist & Mitchell, 1992).