Phone vs. desktop: does screen size skew stress surveys?
NCT ID NCT04040608
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at whether the size of a screen (from a smartphone to a large monitor) affects how people answer stress questions on a visual scale. Two hundred healthy adults will rate their stress on different devices and on paper. Saliva samples and heart rate measurements will also be taken. The goal is to make online surveys more reliable.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this could help researchers design better online surveys that give consistent results regardless of the device used.
- What could go wrong
- This is a small, early-stage observational study in healthy volunteers. It does not test any treatment, so it won't directly lead to a new therapy or cure.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 200 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2021
- Expected to finish
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Mar 2028
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.
Who is studied
healhy volunteers
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Adult persons Exclusion Criteria: * Refusal to participate in the study * Unable to answer basic questions (difficulties understanding, cognitive disorders…)
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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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Chu Clermont Ferrand
RECRUITINGClermont-Ferrand, 63003, France
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