Influence of the package name on the efficacy of open label placebos (OLPs) for sadness

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00035902

Enrollment

150

Registered

2025-01-14

Start date

2025-02-19

Completion date

Unknown

Last updated

2025-10-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy participants

Interventions

Group 1: OLP+Name: Open Label Placebo with an invented “pharmacological-sounding” name for the OLP Group 2: OLP name: Open Label Placebo without product name on the label (only “Placebo”) Group 3: Con

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: No other specific inclusion criteria

Exclusion criteria

Exclusion criteria: severe psychiatric disorder (e.g. psychotic disorders)

Design outcomes

Primary

Measure	Time frame
Item ratings (before and after presenting the pictures): - How sad do you feel right now? (0-100) - How lonely do you feel right now? (0-100) - How excited do you feel right now? (0-100) - How distressed do you feel right now? (0-100)	—

Secondary

Measure	Time frame
In the first part of the study, the following questionnaires and items are presented to the participants once in an online survey: - Brief Symptom Inventory (BSI-18; Franke, G. H., 2000) - UCLA Loneliness Scale (Döring & Bortz, 1993) - NEO Five Factor Inventory (NEO-FFI; Borkenau & Ostendorf, 2007) - 5 items on brand attitude: 1. A brand name is an important source of information about the quality of a product. 2. The brand name of a product influences my purchase decision. 3. I trust branded products. 4. with branded products, you know what you are getting. 5. if I own a branded product, I feel better.	—

Measure

Time frame

In the first part of the study, the following questionnaires and items are presented to the participants once in an online survey: - Brief Symptom Inventory (BSI-18; Franke, G. H., 2000) - UCLA Loneliness Scale (Döring & Bortz, 1993) - NEO Five Factor Inventory (NEO-FFI; Borkenau & Ostendorf, 2007) - 5 items on brand attitude: 1. A brand name is an important source of information about the quality of a product. 2. The brand name of a product influences my purchase decision. 3. I trust branded products. 4. with branded products, you know what you are getting. 5. if I own a branded product, I feel better.

—

Countries

Austria

Contacts

Public ContactAnne Schienle

Universität Graz

anne.schienle@uni-graz.at+43 316 380 5086

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026