Gamified Combined Cognitive Bias Modification in Adults Diagnosed With OCD: Randomized Controlled Trial
NCT ID: NCT06941155
Last Updated: 2025-05-15
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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RECRUITING
NA
90 participants
INTERVENTIONAL
2025-05-14
2027-04-02
Brief Summary
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Detailed Description
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In recent years, gamification has also been used in order to increase motivation and participation in experimental tasks that constitute the content of both CBM-A and CBM-I interventions. It is possible to see examples of this method in the field of mental health in general and it is stated that it has the potential to be effective as an intervention on reducing the symptoms of psychiatric disorders. However, there is no study to investigate the effect of gamified CBM in individuals with OCD. Based on these new developments and their positive effects, the aim of the study is to investigate the effect of the gamified CBM-C on reducing the severity of OCD symptoms, obsessive beliefs, interpretation and attentional biases, depressive symptoms, and psychological distress, and increasing motivation and participation in experimental tasks.
The study will be conducted on adult participants primarily diagnosed with OCD according to the DSM-5 criteria by a psychiatrist at Dokuz Eylul University Hospital and referred for outpatient treatment at the same hospital. Participants will be randomly assigned to one of three groups: gamified CBM-C, standard CBM-C, or a placebo control condition. The intervention will be delivered via a mobile phone. Data collection will include self-report assessments and behavioral tasks. Attentional bias will be measured using a dot-probe task with eye-tracking, and interpretation bias will be assessed through a recognition scenario task. Measurements will be taken at baseline, post-intervention (week 4), and at 3-month follow-up.
It is expected that participants in the gamified CBM-C condition will demonstrate greater improvements across clinical symptoms, cognitive biases, and motivational outcomes compared to participants in the standard CBM-C and placebo control groups. To the best of current knowledge, this study will be the first to evaluate the effects of a gamified CBM-C intervention in individuals diagnosed with OCD. Its findings are anticipated to contribute to the development of scalable, accessible, and cost-effective digital interventions for clinical populations with elevated dropout and relapse rates.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
SINGLE
Study Groups
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Gamified-Combined Cognitive Bias Modification
Participants in this group will receive the gamified version of the combined cognitive bias modification (CBM-C) intervention, consisting of eight sessions over four weeks (two sessions per week), delivered via mobile phone. The intervention includes both attention and interpretation bias modification tasks enhanced with gamification elements.
Gamified-Combined Cognitive Bias Modification
A gamified version of the combined cognitive bias modification (CBM-C) intervention, which includes both attention and interpretation bias modification tasks. The attention component is a modified dot-probe task, and the interpretation component consists of OCD-related scenarios with word-completion exercises. Gamification elements such as feedback and visual rewards are embedded to enhance motivation and engagement. The presentation order of the two intervention components will be counterbalanced: half of the participants will receive the attention bias task first followed by the interpretation task; the other half will receive the interpretation task first followed by the attention bias task. The intervention is delivered via mobile phone in eight sessions over four weeks (two sessions per week).
Standart Combined Cognitive Bias Modification
Participants in this group will receive the standard version of the combined cognitive bias modification (CBM-C) intervention, consisting of eight sessions over four weeks (two sessions per week), delivered via mobile phone. The intervention includes both attention and interpretation bias modification tasks, without any gamification features.
Standard Combined Cognitive Bias Modification
A standard version of the combined cognitive bias modification (CBM-C) intervention, consisting of attention and interpretation bias tasks without gamification features. The attention task is a modified dot-probe paradigm, and the interpretation task involves OCD-related scenarios followed by word-completion exercises. The presentation order of the two intervention components will be counterbalanced: half of the participants will receive the attention bias task first followed by the interpretation task; the other half will receive the interpretation task first followed by the attention bias task. The intervention is delivered via mobile phone in eight sessions over four weeks (two sessions per week).
Placebo Control
Participants in this group will receive a placebo version of the standard combined cognitive bias modification (CBM-C) intervention, consisting of eight sessions over four weeks (two sessions per week), delivered via mobile phone. The placebo version retains the structure of the standard intervention but does not include any active bias modification components.
Placebo
A placebo version of the standard CBM-C intervention that retains the same structure and timing but omits all active bias modification elements. The attention task (modified dot-probe) presents probes equally behind threat and neutral stimuli, and the interpretation task includes OCD-related scenarios with word-completion items that lead to neutral outcomes. No manipulations are applied to shift cognitive bias. The presentation order of the two intervention components will be counterbalanced: half of the participants will receive the attention bias task first followed by the interpretation task; the other half will receive the interpretation task first followed by the attention bias task. The intervention is delivered via mobile phone in eight sessions over four weeks (two sessions per week).
Interventions
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Gamified-Combined Cognitive Bias Modification
A gamified version of the combined cognitive bias modification (CBM-C) intervention, which includes both attention and interpretation bias modification tasks. The attention component is a modified dot-probe task, and the interpretation component consists of OCD-related scenarios with word-completion exercises. Gamification elements such as feedback and visual rewards are embedded to enhance motivation and engagement. The presentation order of the two intervention components will be counterbalanced: half of the participants will receive the attention bias task first followed by the interpretation task; the other half will receive the interpretation task first followed by the attention bias task. The intervention is delivered via mobile phone in eight sessions over four weeks (two sessions per week).
Standard Combined Cognitive Bias Modification
A standard version of the combined cognitive bias modification (CBM-C) intervention, consisting of attention and interpretation bias tasks without gamification features. The attention task is a modified dot-probe paradigm, and the interpretation task involves OCD-related scenarios followed by word-completion exercises. The presentation order of the two intervention components will be counterbalanced: half of the participants will receive the attention bias task first followed by the interpretation task; the other half will receive the interpretation task first followed by the attention bias task. The intervention is delivered via mobile phone in eight sessions over four weeks (two sessions per week).
Placebo
A placebo version of the standard CBM-C intervention that retains the same structure and timing but omits all active bias modification elements. The attention task (modified dot-probe) presents probes equally behind threat and neutral stimuli, and the interpretation task includes OCD-related scenarios with word-completion items that lead to neutral outcomes. No manipulations are applied to shift cognitive bias. The presentation order of the two intervention components will be counterbalanced: half of the participants will receive the attention bias task first followed by the interpretation task; the other half will receive the interpretation task first followed by the attention bias task. The intervention is delivered via mobile phone in eight sessions over four weeks (two sessions per week).
Eligibility Criteria
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Inclusion Criteria
* Primary diagnosis of obsessive-compulsive disorder (OCD), confirmed by a licensed clinician using the Structured Clinical Interview for DSM-5 (SCID-5)
* No current suicidal ideation or psychotic symptoms
* Access to the internet and a mobile phone
* Stable psychiatric medication use for at least one month prior to enrollment, with no changes in dosage during the 4-week intervention period
* No current neurological or medical condition that would interfere with participation
* Ability to perceive colored visual stimuli (e.g., no color blindness)
* Not currently enrolled in another intervention-based study
* Not receiving any other form of psychological treatment at the time of participation
Exclusion Criteria
* Unstable psychiatric medication use (e.g., recent dose change within the past month or expected change during the intervention period)
* Significant neurological or medical illness that may interfere with participation
* Visual impairments that would prevent accurate perception of colored stimuli (e.g., color blindness)
* Current participation in another clinical trial involving psychological intervention
* Receiving concurrent psychotherapy or other psychological treatments outside of the study
18 Years
ALL
No
Sponsors
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The Scientific and Technological Research Council of Turkey
OTHER
Dokuz Eylul University
OTHER
Responsible Party
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Sıla Derin, PhD
Cilinical Psychologist, PhD
Principal Investigators
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Sıla Derin, PhD
Role: PRINCIPAL_INVESTIGATOR
Dokuz Eylul University, İzmir, Turkey
Locations
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Dokuz Eylul University Hospital
Izmir, , Turkey (Türkiye)
Countries
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Central Contacts
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Facility Contacts
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Other Identifiers
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223S390
Identifier Type: -
Identifier Source: org_study_id
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