Finger length may hint at risk of smartphone addiction in young adults
NCT ID NCT07694960
First seen Jul 10, 2026 · Last updated Jul 10, 2026
Summary
This observational study looks at whether the ratio of index to ring finger length and handgrip strength are linked to symptoms of problematic smartphone and internet use. Researchers measured these traits in 173 university students aged 17–26 from Turkish, Middle Asian, African, and Asian backgrounds. Participants completed surveys about their smartphone and internet habits. The goal is to better understand biological factors that might relate to addictive technology use.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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173 people
The number who actually took part.
- Started
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Dec 2022
- Finished
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May 2023
- 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
University students aged 17-26 years from Turkish, Middle Asian, African, and Asian regional backgrounds studying at Bandırma Onyedi Eylül University.
- Ages
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17 to 26 years
- 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: * University students aged 17-26 years. * Classifiable sex and regional-background information. * Ability to understand the study procedures. * Written informed consent provided. * For participants younger than the legal age of majority, additional parent or legal guardian consent obtained according to institutional requirements. Exclusion Criteria: * Previous finger operation. * Finger prosthesis. * Median, radial, or ulnar nerve deformity. * Carpal tunnel syndrome. * Developmental or mental disorder preventing participation or valid assessment.
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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.
Contacts and locations
Locations
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Bandırma Onyedi Eylül University
Balıkesir, Turkey (Türkiye)
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