Cognitive-Behavioral Therapy for Adults With Attention-Deficit/Hyperactivity Disorder Inattentive Presentation

Study Overview
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Brief Summary
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Using a randomized controlled design, standard treatment of group cognitive-behavioral therapy (CBT) according to the Hesslinger protocol is compared to a newly developed group treatment specifically designed for adult patients with ADHD inattentive presentation (ADHD-I) called CBT for ADHD-I (CADDI). Research setting is psychiatric outpatient clinics. Research hypotheses include: 1. The CADDI protocol is more effective than standard treatment in terms of behavioral activation, procrastination, depressive symptoms, functional impairment, and quality of life, 2. Is equally effective in terms of ADHD symptoms, 3. Is more appreciated and tolerable, and 4. Outcome is mediated by mindful awareness. Effects are followed up at 6 and 12 months post treatment.

Official Title
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Group-Based Cognitive-Behavioral Therapy for Adults With Attention-Deficit/Hyperactivity Disorder Inattentive Presentation: Randomized Controlled Trial

Conditions
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ADHD Predominantly Inattentive Type

Intervention / Treatment
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* Behavioral: Cognitive-behavioral therapy (Hesslinger protocol)
* Behavioral: Cognitive-behavioral therapy (CADDI protocol)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Principal diagnosis of ADHD inattentive presentation 18 years of age or older If on medication, it needs to be well-established since three months, and Prior psycho-educational intervention Exclusion Criteria: Intellectual impairment Substance use disorder Difficulties in adherence to medical or other treatment Social and/or psychiatric problems to such an extent that they prevent focusing on treatment, or Simultaneous psychological treatment

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Cognitive-behavioral therapy (Hesslinger protocol)<br> | Behavioral: Cognitive-behavioral therapy (Hesslinger protocol)<br>* Cognitive-behavioral therapy in a group format focusing on improving symptoms of ADHD, specifically by using skills in counteracting hyperactivity and impulsiveness, and promoting mindful awareness.<br>|
| Experimental: Cognitive-behavioral therapy (CADDI protocol)<br> | Behavioral: Cognitive-behavioral therapy (CADDI protocol)<br>* Cognitive-behavioral therapy in a group format focusing on improving inattentive symptoms of ADHD, specifically by using skills in organizing, executing, and completing activity, and promoting mindful awareness.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Behavioral Activation for Depression Scale | Total score 0-150; higher scores represent increased activation | 14 weeks | 
| Pure Procrastination Scale | Total score 12-60; higher scores represent more procrastination | 14 weeks |