| Summary: | 碩士 === 國立政治大學 === 心理學研究所 === 100 === The purpose of the present study was to investigate the influence of emotion experiences and rumination styles on Non-suicidal self-injury behavior (NSSI) in males and females. According to past studies, emotion was considered a critical factor in motivating individuals to practice NSSI. However, most studies focused on negative emotion experiences, and ignored the role of positive emotions and the effect of emotion activation level. Moreover, Selby’s Emotional Cascade Model proposes that rumination style will increase the negative affect intensity, suggesting that rumination style may be another key factor to NSSI. In addition, due to several studies have shown gender differences in risk factors for NSSI, the gender difference will be also take into account in the present study. To sum up, the present study aimed to examine gender differences in predictors (i.e., emotion experiences and rumination styles) for NSSI.
The participants were 508 high school students from one of the private vocational high school in Northern Taiwan. All participants were asked to fill out the questionnaire pack which included demographic questionnaire, short-form rumination style questionnaire, deliberate self- harm inventory, and affect valuation inventory. The results show that gender differences in predicting NSSI existed: First, in predicting the occurrence of NSSI in the past year, negative affect and low arousal negative emotion were the most effective factors for females; negative emotion and low arousal positive emotion were the most effective ones for males. Second, neither emotion experience nor rumination style can predict the frequency of NSSI in the past year for males and females. Third, in predicting the numbers of types of self-injury used in the past year, there was no effective predictor for females; negative emotion and low arousal emotion were the effective predictors for males. Finally, the results and the practical implication were discussed in the thesis.
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