As Egbert (1985) contends, "the physical recovery of surgical patients is exquisitely sensitive to psychological factors" (p. 56). The studies cited in Chapter 2 support this statement. This study suggests personality type and coping styles may have a role in pain response that is related to particular procedures and particular populations. The management of postoperative pain is dependent on an understanding of individual differences that mediate a given response. Because appropriate psychological intervention can affect the incidence of postoperative complications and the length of hospital stay, it is important to continue to investigate psychological factors that may influence the patient's response to procedures. Appropriate psychologi- cal intervention could be idiosyncratic, considering individual differ- ences such as type preference and coping style. In summary, the personality type preferences identified by this study as being associated with pain response are extraversion/intro- version for the hand rehabilitation group and thinking/feeling for the gastric bypass group. The coping styles most associated with pain response are the inhibited style and sensitive style for the gastric bypass group; the inhibited style and forceful style for the hand surgery group; and the introversive style, respectful style, and sensitive style for the hand rehabilitation group. Recommendation for Future Research Although this study has identified some variables which appear to be associated with pain response, some inconsistencies in these findings, and taken with other findings, suggest a need to search for