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Positive changes (posttraumatic growth PTG) and negative changes (posttraumatic depreciation PTD) were assessed using the PTGI-42 with persons reporting changes from a stressful event. PTG and PTD were uncorrelated, and PTG was much greater than PTD. PTG was positively related to disruption of core beliefs and recent deliberate rumination and negatively related to recent intrusive rumination. PTD was positively related to intrusive rumination. Quality of life and meaning in one's life were positively related to PTG, negatively related to PTD, and an interaction indicated that PTG moderated the impact of PTD on both, indicating that PTG and PTD may separately contribute to current well-being.
Cann et al. (Fri,) studied this question.