Hoarding DisorderNCT02306174
Cognitive Rehabilitation and Exposure-based Class for Compulsive Hoarding
A study testing Cognitive Rehabilitation and Exposure-based Class for Compulsive Hoarding in people with Hoarding Disorder, run by University of Miami at 1 site in United States.
Trial summary
The purpose of this protocol is to investigate the effectiveness of a manualized, 20-week group cognitive rehabilitation (CR) and exposure therapy (ET) course for compulsive hoarding. The overarching aim is to understand whether this course will decrease the core symptoms of hoarding and associated features. Read more about this study
- Who is it for?
- Ages 18 to 85 years
- Conditions the study is for
- Hoarding Disorder
- What is being tested?
- Cognitive Rehabilitation and Exposure-based Class for Compulsive Hoarding
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 13 participants
- Where
- 1 siteUnited States
- Study dates
- Sep 2014to 26 Jun 2025
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 85 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Include:
- Individuals who exhibit subclinical and clinical levels of hoarding disorder, as determined by the SCID interview conducted at the screening assessment, will be eligible to participate in the study. Individuals may also display clinically relevant symptoms of hoarding as indicated by scores on the Hoarding Rating Scale Interview (HRS-I) and/or on the Saving Inventory-Revised (SIR).
- Comorbid mood and anxiety disorders are permitted.
- English-speaking
- Pregnant women
Who cannot join
- Adults unable to consent
- Individuals who are not yet adults (infants, children, teenagers)
- Individuals who are over the age of 85
- Individuals with cognitive or physical impairments that would interfere with their participation (e.g., Dementia, uncorrected hearing)
- Participants who have current or past psychotic symptoms or current or past alcohol/substance abuse/dependence may also be excluded.
- Participants may also be excluded if they are currently in other forms of psychotherapy.
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- Participants may be excluded if they have had a change in psychotropic medications within three months of the baseline assessment/first class.
- Participants may be excluded if hoarding is not their primary diagnosis.
- Prisoners
Trial locations and contacts
1 site in 1 country.
About this study
The purpose of this protocol is to investigate the effectiveness of a manualized, 20-week group cognitive rehabilitation (CR) and exposure therapy (ET) course for compulsive hoarding. The overarching aim is to understand whether this course will decrease the core symptoms of hoarding and associated features.
- Conditions
- Hoarding Disorder
- Being tested
- Cognitive Rehabilitation and Exposure-based Class for Compulsive Hoarding
- Keywords
- Hoarding
- Medical subject headings
- Hoarding Disorder, Hoarding
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Cognitive Rehabilitation and Exposure-based Class for Compulsive HoardingBehavioural
The group sessions consists of 20 classes, each lasting approximately 90 minutes and may consist of some or all of the following:
- A group agreement and a confidentiality contract
- Homework assignments
- Viewing informational videos about hoarding
- Behavioral experiments including sorting and discarding exercises
- Non-acquisition exposures
This course is based on the Manual Cognitive Rehabilitation and Exposure/Sorting Therapy for Compulsive Hoarding (Ayers et al., 2014).
| Study group | Role | What they receive |
|---|---|---|
| Cognitive Rehabilitation and Exposure-based Class for Compulsi | Experimental | Cognitive training is to improve thinking by learning new skills and strategies. The class begins with cognitive training to increase ability to carry out the skills learned later in treatment.
Exposure therapy for discarding and acquiring helps to improve ability to make choices about possessions and learn to tolerate anxiety. Participants will face making difficult choices about items and potentially letting them go. Through repeated exposure to decisions about discarding and acquiring, distress about letting go or making choices about items will decrease over time. Receives: Behavioral: Cognitive Rehabilitation and Exposure-based Class for Compulsive Hoarding |
What is being measured
The primary outcome is the main question the study is designed to answer.
Hoarding Rating Scale Interview
The Hoarding Rating scale has a total score ranging from 0 -40 with the higher score indicating higher symptoms of hoarding.
This will be used to assess whether hoarding symptoms decrease as a result of treatment.
Measured: 22 weeks
Clinician's Global Impression Improvement and Severity ratings
The CGI has a score range of 0-7 with the higher score indicating more severe symptoms.This will be used to assess whether hoarding symptoms decrease as a result of treatment.
Measured: 22 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 Dec 2014 (estimated)
- Study startSep 2014
- Primary completion26 Jun 2025
- Study completion26 Jun 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Hoarding DisorderStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 13 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Miami
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Kiara Timpano, University of Miami
- Investigators
- Kiara Timpano, PhD, Principal investigator, University of Miami
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02306174
- Sponsor's protocol ID
- 20140644
- Status last verified
- Aug 2026
- First submitted
- 1 Dec 2014
- Last updated
- 17 Aug 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 17 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Cognitive Rehabilitation and Exposure-based Class for Compulsive Hoarding
- ClinicalTrials.gov ID
- NCT02306174
- Acronym / sponsor ID
- 20140644
- Conditions
- Hoarding Disorder
- Keywords
- Hoarding
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 13 participants (actual)
- Lead sponsor
- University of MiamiUniversity, hospital or other
- Study start
- Sep 2014 (actual)
- Primary completion
- 26 Jun 2025 (actual)
- Study completion
- 26 Jun 2025 (actual)
- First posted
- 3 Dec 2014 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this protocol is to investigate the effectiveness of a manualized, 20-week group cognitive rehabilitation (CR) and exposure therapy (ET) course for compulsive hoarding. The overarching aim is to understand whether this course will decrease the core symptoms of hoarding and associated features.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Cognitive Rehabilitation and Exposure-based Class for Compulsi | Experimental | Behavioral: Cognitive Rehabilitation and Exposure-based Class for Compulsive HoardingCognitive training is to improve thinking by learning new skills and strategies. The class begins with cognitive training to increase ability to carry out the skills learned later in treatment. Exposure therapy for discarding and acquiring helps to improve ability to make choices about possessions and learn to tolerate anxiety. Participants will face making difficult choices about items and potentially letting them go. Through repeated exposure to decisions about discarding and acquiring, distress about letting go or making choices about items will decrease over time. |
Who may qualify
- Ages
- 18 to 85 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- Include:
Key exclusion criteria (9 listed)
- Adults unable to consent
- Individuals who are not yet adults (infants, children, teenagers)
- Individuals who are over the age of 85
- Individuals with cognitive or physical impairments that would interfere with their participation (e.g., Dementia, uncorrected hearing)
- Participants who have current or past psychotic symptoms or current or past alcohol/substance abuse/dependence may also be excluded.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Cognitive Rehabilitation and Exposure-based Class for Compulsive HoardingThe group sessions consists of 20 classes, each lasting approximately 90 minutes and may consist of some or all of the following: * A group agreement and a confidentiality contract * Homework assignments * Viewing informational videos about hoarding * Behavioral experiments including sorting and discarding exercises * Non-acquisition exposures This course is based on the Manual Cognitive Rehabilitation and Exposure/Sorting Therapy for Compulsive Hoarding (Ayers et al., 2014). | Behavioural | Cognitive Rehabilitation and Exposure-based Class for Compulsi |
Primary outcome
Hoarding Rating Scale Interview
Time frame: 22 weeks
The Hoarding Rating scale has a total score ranging from 0 -40 with the higher score indicating higher symptoms of hoarding. This will be used to assess whether hoarding symptoms decrease as a result of treatment.
Clinician's Global Impression Improvement and Severity ratings
Time frame: 22 weeks
The CGI has a score range of 0-7 with the higher score indicating more severe symptoms.This will be used to assess whether hoarding symptoms decrease as a result of treatment.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 17 Aug 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Kiara Timpano, PhD principal investigator
University of Miami
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Cognitive Rehabilitation and Exposure-based Class for Compulsive Hoarding in people with Hoarding Disorder, run by University of Miami at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 17 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Hoarding Rating Scale Interview (time frame: 22 weeks). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Aug 2026; AzTrials last refreshed its copy on 29 Oct 2026.