Our research on the relationships between individual differences, feedback seeking, and reactions to feedback sought to identify and clarify the existing state of knowledge concerning these relationships. We identified five individual difference variables that have historically been included in empirical feedback studies. These are: self-esteem, self-efficacy, locus of control, achievement need, and tolerance for ambiguity. Within the identified research, feedback-related responses were classified into five categories: affective reactions to feedback (e.g., satisfaction with the feedback), cognitive reactions to feedback (e.g., perceived accuracy), feedback monitoring (i.e., using indirect methods such as observing others to gain some performance information), feedback seeking (i.e., asking others for feedback), and other behaviors (often including performance following the receipt of feedback). The results of this investigation are summarized in Appendices A through E. In each appendix, the relationship between individual difference and the responses given above are outlined. More specifically, the results for self-esteem are contained in Appendix A, for self-efficacy in Appendix B, for locus of control in Appendix C, for tolerance for ambiguity in Appendix D, and need for achievement in Appendix E. The literature search and review revealed that much of the available empirical literature has focused on either self-esteem or self-efficacy. Due to the widespread interest in these two individual differences, and the fact that they are qualitatively different (as explained below), we decided to conduct a more extensive evaluation and exploration of them within the context of performance feedback. This evaluation resulted in the present technical report. It provides a close examination of the relationships between self-esteem, self-efficacy, feedback seeking, and reactions to feedback. Furthermore, specific testable propositions are developed in order to identify directions for future research. Our review indicated that despite the large number of studies addressing individual difference-feedback related behavior relationships, the precise role of these variables is still unclear. The more targeted review of the self-esteem and self-efficacy literature is also instructive because it highlights the role of two very different types of variables that might affect reactions to feedback and feedback seeking. Self-esteem is a personality trait variable that develops early in life. It refers to a general belief in one's own self-worth. A person's self-esteem level tends to remain fairly consistent over time. Therefore, while self-esteem may affect one's reactions to feedback and one's desire for feedback, self-esteem itself tends not to be affected by any one particular feedback incident. In contrast, self-efficacy is a situationally-specific belief about one's ability to perform at a specific level given a particular performance situation. Self-efficacy not only affects one's desire for and reactions to feedback, but may i...