Therefore, self-concept is usually measured in a general way and mainly concerns the global self-image. However, self-efficacy beliefs vary across activity domains, different levels of difficulty within the same activity, and even different circumstances (Bandura, 1997, p.11). For example, a person who has low self-efficacy in swimming may have high self-efficacy in singing, while the general self-concept may fail to explain this specificity. In conclusion, self-efficacy is different from the global constructs of self-esteem and self-concept in that it is specific to certain activities, certain levels of difficulty, and certain