Acceptance and Commitment Therapy-Based Anger Management Training in Forensic Psychiatry Patients

October 2, 2026 updated by: Hatice Polat

Effect of Acceptance and Commitment Therapy-based Anger Management Training on the Aggression Levels of Forensic Psychiatry Patients: A Randomized Controlled Study

The goal of this interventional study is to determine the effect of acceptance and commitment therapy (ACT)-based anger management training on the aggression levels of forensic psychiatry patients. The main hypotheses are:

H0: ACT-based anger management training does not affect the aggression levels of forensic psychiatry patients.

H1: ACT-based anger management training reduces the aggression levels of forensic psychiatry patients.

In the study, the researchers implemented an 8-session Acceptance and Commitment Therapy Anger Group protocol for the experimental group. The ACT training sessions were conducted once a week for a total of eight sessions. This program was applied only to the patients in the experimental group.

Both the experimental and control group patients answered the questions in the Personal Information Form, which included the patients' demographic information, and the Buss-Perry Aggression Questionnaire before and after the ACT training.

ACT-based anger management training was an effective method in reducing the aggression levels of forensic psychiatry patients.

Study Overview

Study Type

Interventional

Enrollment (Actual)

60

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Elâzığ, Turkey (Türkiye)
        • Elazığ Fethi Sekin City Hospital- High Security Forensic Psychiatry (HSFP)

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

being admitted to the inpatient psychiatry ward for protection and treatment, being in remission, not having any physical (speech, hearing impairment, etc.) or neurological disorders that would prevent the completion of research forms, being between the ages of 18-65 years, not having any communication problems and being open to cooperation, being literate, and volunteering to participate in the study.

Exclusion Criteria:

meeting the inclusion criteria and having organic and mental problems that would prevent understanding and completing the scales.

-

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Experimental Group

Patients in the experimental group receive the Acceptance and Commitment Therapy (ACT) Anger Group intervention.

An Acceptance and Commitment Therapy (ACT)-based anger management training program designed to reduce aggression levels among forensic psychiatry patients.

Other Names:
  • Acceptance and Commitment Therapy (ACT)
No Intervention: Control Group

Patients in the control group did not receive the Acceptance and Commitment Therapy (ACT) Anger Group intervention.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Aggression Level Measured by the Buss-Perry Aggression Questionnaire (BPAQ)
Time Frame: Baseline and immediately after completion of the intervention

Developed by Buss and Perry in 1992, this is a self-report scale that evaluates aggression in the context of personality traits in terms of physical aggression, verbal aggression, anger, and hostility

Baseline and immediately after completion of the intervention

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 6, 2021

Primary Completion (Actual)

August 28, 2021

Study Completion (Actual)

November 15, 2022

Study Registration Dates

First Submitted

September 14, 2026

First Submitted That Met QC Criteria

October 2, 2026

First Posted (Actual)

October 5, 2026

Study Record Updates

Last Update Posted (Actual)

October 5, 2026

Last Update Submitted That Met QC Criteria

October 2, 2026

Last Verified

September 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Subscribe