The Effectiveness of Combined Acceptance and Commitment Therapy and Exposure and Response Prevention on Obsessive-Compulsive Disorder

The Effectiveness of Combined Acceptance and Commitment Therapy and Exposure and Response Prevention on OCD Symptom Reduction and Related Psychological Factors in Patients with Obsessive-Compulsive Disorder

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

IRCT

Registry ID

IRCT20230719058848N1

Enrollment

Registered

2023-08-28

Start date

2023-09-20

Completion date

Unknown

Last updated

2023-10-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Obsessive compulsive disorder. Obsessive-compulsive disorder

Interventions

Intervention 1: Intervention group: Including 20 patients with obsessive-compulsive disorder who will receive the combined treatment protocol of ACT and ERP written by Twohig et al. (2011) twice a wee

Eligibility

Sex/Gender

All

Age

18 Years to 60 Years

Inclusion criteria

Inclusion criteria: having symptoms of obsessive-compulsive disorder based on the interview (SCID-I, II) and obtaining a score of at least 21 in the OCI-R questionnaire. Age range between 18-60 years. Having a diploma or higher education. Participants` interest to participate in the research based on the provisions of the written consent.

Exclusion criteria

Exclusion criteria: Suffering from severe depression (score = 24 on the Hamilton Depression Inventory), bipolar disorder spectrum, psychotic spectrum disorder, or borderline or schizotypal personality disorder. Drug and alcohol consumption in the last three months. Participation in previous formal ERP or ACT trials for OCD. Taking psychiatric drugs.

Design outcomes

Primary

Measure	Time frame
Obsessive-compulsive disorder score in OCI-R questionnaire. Timepoint: Before the start of the intervention, after the end of the intervention, 3 .months after the end of the intervention. Method of measurement: Obsessive-Compulsive Inventory-Revised (OCI-R).	—

Secondary

Measure	Time frame
Psychological flexibility score. Timepoint: Before the start of the intervention, after the end of the intervention, 3 months after the end of the intervention. Method of measurement: Acceptance and Action Questionnaire-II (AAQ-II).;Experiential avoidance score. Timepoint: Before the start of the intervention, after the end of the intervention, 3 months after the end of the intervention. Method of measurement: Acceptance and Action Questionnaire-II (AAQ-II).;Cognitive fusion score. Timepoint: Before the start of the intervention, after the end of the intervention, 3 months after the end of the intervention. Method of measurement: Cognitive Fusion Questionnaire-7 (CFQ).;Interpretation of intrusions score. Timepoint: Before the start of the intervention, after the end of the intervention, 3 months after the end of the intervention. Method of measurement: Interpretation of Intrusions Inventory-31 (III-31).	—

Measure

Time frame

Psychological flexibility score. Timepoint: Before the start of the intervention, after the end of the intervention, 3 months after the end of the intervention. Method of measurement: Acceptance and Action Questionnaire-II (AAQ-II).;Experiential avoidance score. Timepoint: Before the start of the intervention, after the end of the intervention, 3 months after the end of the intervention. Method of measurement: Acceptance and Action Questionnaire-II (AAQ-II).;Cognitive fusion score. Timepoint: Before the start of the intervention, after the end of the intervention, 3 months after the end of the intervention. Method of measurement: Cognitive Fusion Questionnaire-7 (CFQ).;Interpretation of intrusions score. Timepoint: Before the start of the intervention, after the end of the intervention, 3 months after the end of the intervention. Method of measurement: Interpretation of Intrusions Inventory-31 (III-31).

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Countries

Iran (Islamic Republic of)

Contacts

Public ContactDr. Seyyede Elnaz Mousavi

Zanjan University of Medical Sciences

elnaz48.mousavi@gmail.com+98 24 3354 4001

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026