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Volume 32, Issue 1 (Continuously Updated 2026)
IJPCP 2026, 32(1): 0-0 |
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Matinpoor B, Yaghubi H, Roshan Chesli R, Bakhshipour Roodsari A, Farahani H. Development and Validation of a Phenomenology-Based Embodiment Protocol for Depersonalization/Derealization Disorder. IJPCP 2026; 32 (1)
URL: http://ijpcp.iums.ac.ir/article-1-4521-en.html
URL: http://ijpcp.iums.ac.ir/article-1-4521-en.html
Bahman Matinpoor1 
, Hamid Yaghubi2 , Rasol Roshan Chesli1 , Abass Bakhshipour Roodsari3 , Hojjatollah Farahani4
, Hamid Yaghubi2 , Rasol Roshan Chesli1 , Abass Bakhshipour Roodsari3 , Hojjatollah Farahani4
1- Department of Clinical Psychology, Faculty of Humanities, Shahed University, Tehran, Iran.
2- Department of Clinical Psychology, Faculty of Humanities, Shahed University, Tehran, Iran. ,yaghubi@shahed.ac.ir
3- Department of Psychology, Faculty of Education and Psychology, University of Tabriz, Tabriz, Iran.
4- Department of Psychology, Faculty of Humanities, Tarbiat Modares University, Tehran, Iran.
2- Department of Clinical Psychology, Faculty of Humanities, Shahed University, Tehran, Iran. ,
3- Department of Psychology, Faculty of Education and Psychology, University of Tabriz, Tabriz, Iran.
4- Department of Psychology, Faculty of Humanities, Tarbiat Modares University, Tehran, Iran.
Abstract: (535 Views)
Objectives Various psychotherapies, including psychodynamic, cognitive-behavioral, hypnotherapy, and supportive approaches, have been employed to treat dissociative disorders, particularly depersonalization/derealization disorder (DDD). However, a significant number of individuals do not respond robustly to standard psychotherapies. This study aimed to design a coherent protocol based on phenomenological principles to reduce symptoms in individuals with DDD
Methods The Intervention Mapping approach was utilized to systematically develop the protocol. The initial draft of the phenomenology-based embodiment protocol was designed based on existing embodiment models, national and international studies on embodiment and related variables, and psychological variables relevant to DDD. A panel of 10 experts in psychology and phenomenological philosophy assessed the protocol’s content validity and feasibility.
Results The final protocol comprised eight sessions organized into two main phases (noematic and noetic embodiment), with a supplementary corporeal phase for patients with comorbid anxiety or panic. Session-level content validity ratios ranged from 0.80 to 1.00, all exceeding Lawshe’s critical value for a 10-member panel (0.62). The overall mean feasibility score was 4.92 on a 5-point scale (domain means: 4.77–4.95), and mean suitability ratings ranged from 1.6 to 1.9 on a 0–2 scale (one-sample t-test, P≤0.001 for all indices).
Conclusion According to expert judgment, the phenomenology-based embodiment protocol has satisfactory content validity, feasibility, and suitability for reducing symptoms of DDD. Its clinical efficacy should be examined in future controlled trials.
Methods The Intervention Mapping approach was utilized to systematically develop the protocol. The initial draft of the phenomenology-based embodiment protocol was designed based on existing embodiment models, national and international studies on embodiment and related variables, and psychological variables relevant to DDD. A panel of 10 experts in psychology and phenomenological philosophy assessed the protocol’s content validity and feasibility.
Results The final protocol comprised eight sessions organized into two main phases (noematic and noetic embodiment), with a supplementary corporeal phase for patients with comorbid anxiety or panic. Session-level content validity ratios ranged from 0.80 to 1.00, all exceeding Lawshe’s critical value for a 10-member panel (0.62). The overall mean feasibility score was 4.92 on a 5-point scale (domain means: 4.77–4.95), and mean suitability ratings ranged from 1.6 to 1.9 on a 0–2 scale (one-sample t-test, P≤0.001 for all indices).
Conclusion According to expert judgment, the phenomenology-based embodiment protocol has satisfactory content validity, feasibility, and suitability for reducing symptoms of DDD. Its clinical efficacy should be examined in future controlled trials.
Type of Study: Original Research |
Subject:
Psychiatry and Psychology
Received: 2025/05/31 | Accepted: 2026/06/15 | Published: 2026/08/1
Received: 2025/05/31 | Accepted: 2026/06/15 | Published: 2026/08/1
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