| Summary: | 碩士 === 輔仁大學 === 臨床心理學系碩士班 === 107 === Introduction: According to the DSM-5 criteria, borderline personality disorder (BPD) is a severe mental disorder characterized by difficulties in interpersonal relationships, self-image, and others. Non-clinical cases with BPD features have also been noted to experience severe functional impairments. However, few studies have focused on them. Theories of BPD point out emotion dysregulation as a key component of this disorder. In recent years, biofeedback has often been used to study emotion regulation. On the other hand, more and more researchers are studying mindfulness, which is related to emotion regulation. Despite this increased focus, the relationships among mindfulness, emotion regulation, and BPD features remain unclear. Mindfulness-based therapy is considered to be helpful in emotion regulation. Even so, few researchers have evaluated the independent role of mindfulness-based strategy in BPD.
Purposes: This study focused on non-clinical cases with BPD features. Through subjective and objective measurements, this study tried to understand the full picture of BPD features. In addition, this research aimed to clarify the relationships among mindfulness, emotion regulation, and BPD features, and to explore the efficacy of mindfulness-based strategy on BPD features.
Method: In all, 179 participants were recruited from the general public by advertising on websites and invited to fill out the questionnaire. According to the PAI-BOR cut-off scores, 32 participants with BPD features and 32 healthy controls (HCs) were invited to participate in the second phase of biofeedback studies. In the third phase, of the 32 participants with BPD features, 16 participants were included in the mindfulness-based strategy, and another 16 participants were included in the uninvolved group.
Results: Significant differences between the BPD-features group and the HC group were found on all the subjective scales. During the recovery period, significant differences in PNS activity between the BPD-features group and the HC group were found. When depression and anxiety were controlled for, the relationship between mindfulness and BPD features was mediated by emotion dysregulation. The mindfulness-based strategy was effective in improving the BPD features, emotion regulation, the traits of mindfulness, depression, anxiety, and the withdrawal of the PNS of the participants with BPD features.
Discussion: Individuals with BPD features have more psychological distress and atypical PNS activity. Because of the deficits of mindfulness, such individuals cannot regulate emotion effectively, and BPD features thus develop. Through a mindfulness-based strategy, the activity of the PNS of an individual with BPD features will increase, which will help the individual to improve emotion regulation. This study helps us better understand the BPD features, and the effects of mindfulness-based strategy on those features.
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