The effectiveness of acceptance and commitment therapy (ACT) on neurotic perfectionism and internalized self-criticism in neurotic perfectionist girls: A single-case experimental study

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Khadem Dezfuli Zahra; Alavi Seyedeh Zahra; Shahbazi Masoud

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Journal Paper

Paper Information

Journal: Shenakht Journal of Psychology and Psychiatry Year:2023 | Volume:10 | Issue:5 Page(s): 132-147

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Title

The effectiveness of acceptance and commitment therapy (ACT) on neurotic perfectionism and internalized self-criticism in neurotic perfectionist girls: A single-case experimental study

Author(s)

Khadem Dezfuli Zahra | Alavi Seyedeh Zahra | Shahbazi Masoud | Issue Writer Certificate

Keywords

Acceptance and commitment therapy (ACT)Q4

PerfectionismQ4

Self-assessmentQ4

Abstract

Introduction: Neurotic Perfectionism has a variety of psychological consequences that should be considered in psychotherapy applications. Aim: The present study aimed to examine the effectiveness of acceptance and commitment therapy (ACT) on neurotic Perfectionism and internalized self-criticism in neurotic perfectionist girls. Method: This study was conducted using a single-case quasi-experimental design with, concurrent multiple baseline. The research population consisted of neurotic perfectionist girls visiting counseling centers in Ahvaz in 2022. The participants were a sample of 5 girls selected using purposive sampling with a minimum cut-off score of 145 in the Neurotic Perfectionism Questionnaire (NPQ). The acceptance and commitment therapy (ACT) (Twohig & et al, 2021) was implemented in eleven 90-minute sessions. The participants completed the Neurotic Perfectionism Questionnaire (1994), and the Levels of Self-Criticism Scale (2004). The data were collected in three baseline, intervention, and three-month follow-up phases and analyzed using reliable change index (RCI), recovery percentage, and visual inspection. Results: The analysis of the recovery percentage showed the participants’ neurotic Perfectionism 17. 67 and internalized self-criticism 19. 73 improved in the intervention phase and their neurotic Perfectionism 36. 25 and internalized self-criticism 49. 90 increased in the follow-up phase. Moreover, the reliability change index of both variables in the post-treatment and follow-up phases was significant (P=0. 05). Conclusion: Considering the effectiveness of acceptance and commitment therapy in reducing neurotic Perfectionism and internalized self-criticism by increasing psychological flexibility, this therapy can be used as an intervention method in neurotic perfectionist girls.

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