TABLE 1. Distribution of sample by job classification 38 10 8. Confidence-the perception of competence the participants have in their ability in each of the eight components. Human Subjects Release The Iowa State University Committee on the Use of Human Subjects in Research reviewed this project and concluded that the rights and welfare of the human subjects were adequately protected, that risks were outweighted by the potential benefits and expected value of the knowledge sought, that confidentiality of data was assured, and that informed consent was obtained by appropriate procedures. 11 CHAPTER II. REVIEW OF LITERATURE