Prenatal Hormone Signals and Hand Skills in Adults
Official title: Prenatal Androgen and Fine Motor Skills and Tactile Discrimination
Run by Nigde Omer Halisdemir University · NCT07627113 · Data updated 2026-11-12
This study tests whether the 2D:4D finger length ratio, an indirect marker of prenatal hormones, is related to fine motor and tactile abilities in healthy adults.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years to 40 Years |
| Sex | All |
| Enrollment | 94 (estimated) |
| Sponsor | Nigde Omer Halisdemir University Academic / other |
| Locations | 1 site (Niğde, Merkez) |
| Status | Recruiting |
| Started | October 6, 2026 |
| Main results expected | July 1, 2027 |
| Study ends | July 1, 2027 |
| Registry record updated | October 9, 2026 |
| Trial ID | NCT07627113 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Healthy adults aged 18–40 with normal vision and hearing who can follow test instructions.
✕Probably not a fit
Participants without the expected relationship will still contribute to the overall understanding of prenatal hormonal indicators and motor skills.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Researchers will measure the 2D:4D finger-length ratio and assess fine motor skills and tactile discrimination in healthy adults aged 18–40. The study uses observational methods to explore potential links between prenatal androgen exposure and later hand performance. Results could help clarify whether finger length ratios relate to dexterity and tactile acuity in everyday tasks. The design focuses on non-invasive measurements and standard skill assessments, conducted at Niğde Ömer Halisdemir University. No intervention will be administered beyond data collection.
Why it matters
Potential benefit: If a relationship is found, it could contribute to understanding how early hormonal factors might influence dexterity and tactile perception.
How similar studies have gone: Previous research on 2D:4D and later abilities is mixed; some studies show associations while others do not, making this largely exploratory.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Healthy individuals aged 18-40 * Having sufficient visual and auditory function to understand and administer the test, * Voluntary agreement to participate in the study and providing informed consent. Exclusion Criteria: * Individuals with any musculoskeletal pathology, * History of upper extremity trauma, * Individuals diagnosed with metabolic, neurological, or genetic diseases, * Individuals with a history of hand surgery within the last 6 months, * Pregnancy or breastfeeding.
Where it's running
-
Nigde Omer Halisdemir University
Niğde, Merkez, Turkey (Türkiye) Recruiting
Study contacts
- Principal investigator: Rabia ZORLULAR — Nigde Omer Halisdemir University
- Study coordinator: Rabia ZORLULAR
- Email: rabiaeraslan118@gmail.com
- Phone: +5424362082
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.