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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COMPLETED
NA
51 participants
INTERVENTIONAL
2018-10-01
2020-01-31
Brief Summary
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
BASIC_SCIENCE
DOUBLE
Study Groups
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Non-deceptive placebo group (additional information)
Participants receive a placebo pill and are told that it is placebo. They receive additional information about the power of placebo effects via a film sequence before they take the placebo.
Placebo
Placebo pill
Film sequence
The experimental group watches a film about the power of placebo effects.
Non-deceptive placebo group (no additional information)
Participants receive a placebo pill and are told that it is placebo. They do not receive additional information about placebo effects. Instead, they watch a neutral film sequence about sleep.
Placebo
Placebo pill
Film sequence
The control group watches a film about sleep.
Interventions
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Placebo
Placebo pill
Film sequence
The experimental group watches a film about the power of placebo effects.
Film sequence
The control group watches a film about sleep.
Eligibility Criteria
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Inclusion Criteria
* fluent in German language
* provide written informed consent
* ability to understand the explanations and instructions given by the study physician and the investigator
Exclusion Criteria
* allergies to ingredients of placebo
* patients scoring below 8 or above 21 on the Insomnia Severity Index
* patients suffering from a mental disorder as verified by the SCID
* patients suffering from an acute physical illness
* nicotine consumption \> 10 cigarettes/day
* unwillingness to refrain from alcohol consumption throughout the study
* change in concomitant medication regime during the last 2 weeks prior to visit 1 or after randomization
* intake of psychotropic drugs during the last 3 months prior to visit 1
* currently pregnant (verified by urine pregnancy test) or lactating
18 Years
69 Years
ALL
No
Sponsors
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Philipps University Marburg
OTHER
Responsible Party
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Winfried Rief
Professor Dr.
Principal Investigators
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Winfried Rief, Prof. Dr.
Role: PRINCIPAL_INVESTIGATOR
Clinical Psychology and Psychotherapy, Department of Psychology, Philipps University Marburg
Locations
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Department of Clinical Psychology and Psychotherapy, Philipps-University Marburg
Marburg, , Germany
Countries
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Other Identifiers
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2017-43k
Identifier Type: -
Identifier Source: org_study_id
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