Phone app aims to boost joy in people who can't feel pleasure
NCT ID NCT07155941
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests a two-week smartphone program designed to help people who struggle to feel pleasure (anhedonia) and also have high depression, anxiety, or stress. Participants do three short audio-guided exercises each day, focusing on gratitude, savoring positive moments, and finding silver linings. The goal is to see if these exercises can improve mood and reduce distress compared to a relaxation-only control group.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 60 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2025
- Expected to finish
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Jan 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * German speaking * Smartphone available and willingness to participate in repeated training units and questions delivered via app * Clinically elevated anhedonia (SHAPS \>= 25) and elevated depression (DASS-21-Depression \>= 10), elevated anxiey (DASS-21-Anxiety \>= 6) or elevated stress (DASS-21-Stress \>= 10) Exclusion Criteria: * Psychotropic medication * Psychotherapy currently ongoing or planned during participation * Suicidality, lifetime diagnosis of bipolar disorders or psychotic episodes
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Philipps-University Marburg
RECRUITINGMarburg, Hesse, 35037, Germany
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