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

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.

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Key information

Conditions

ADHD Predominantly Inattentive Type Attention Deficit Disorder with Hyperactivity Attention Deficit and Disruptive Behavior Disorders Mental Disorders Neurodevelopmental Disorders

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Psychiatry Centre Södertälje

Södertälje, Stockholm County, 15240, Sweden

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Cognitive-behavioral therapy (Hesslinger protocol)

Behavioral

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.

Cognitive-behavioral therapy (CADDI protocol)

Behavioral

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.

Primary outcomes

Behavioral Activation for Depression Scale

Time frame: 14 weeks

Total score 0-150; higher scores represent increased activation
Pure Procrastination Scale

Time frame: 14 weeks

Total score 12-60; higher scores represent more procrastination

Sponsors and collaborators

Lead sponsor

Karolinska Institutet

Other

Registry information

Official study title

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

Important dates

Study start: 2019
Primary completion: 2024
Study completion: 2024
First posted: Sep 16, 2019
Registry last updated: Mar 4, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed