An exposure-based examination of the effects of written emotional disclosure

Objectives. We undertook this study to clarify the operative mechanisms that account for the relationship between emotional disclosure and health. We hypothesized that emotional disclosure via writing was a form of exposure‐based therapy and that exposure was the active therapeutic component. Design and method. A group of 129 male and female undergraduates were randomly assigned to three writing groups: (1) a trauma disclosure writing group; (2) a positive emotion writing group to control for affect arousal; and (3) a neutral writing group to control for any affect arousal ‐ either positive or negative. Process measures were taken before and after each 3‐day, 20‐minute writing session. All participantscompleted questionnaires that assessed psychological and physical functioning at both the baseline and the end of the semester (approximately 9 weeks later). Results. Groups reported differential affective arousal as well as disclosure themes in accord with our predictions. We did not replicate the findings of Pennebaker and his colleagues (e.g. Pennebaker & Beall, 1986). In our study, physical health outcome measures did not differ between groups by the end of the semester, nor did psychological measures change from baseline to follow‐up. Conclusions. We found only limited support for the hypothesis that exposure best explains the effects of written self‐disclosure. Implications for future research in this area are discussed.