Prenatal testosterone does not explain sex differences in spatial ability
Open accessAbstract
The most consistent sex differences in cognition are found for spatial ability, in which males, on average, outperform females. Utilizing a twin design, two studies have shown that females with male co-twins perform better than females with female co-twins on a mental rotation task. According to the Twin Testosterone Transfer hypothesis (TTT) this advantage is due to in-uterine transmission of testosterone from males to females. The present study tested the TTT across 14 different spatial ability measures, including mental rotation tasks, in a large sample of 19–21-year-old twins. Males performed significantly better than females on all spatial tasks, with effect sizes ranging from η2 = 0.02 to η2 = 0.16. Females with a male co-twin outperformed females with a female co-twin in two of the tasks. The effect sizes for both differences were negligible (η2 < 0.02). Contrary to the previous studies, our results gave no indication that prenatally transferred testosterone, from a male to a female twin, influences sex differences in spatial ability.
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- Authors
- Toivainen, T., Pannini, G., Papageorgiou, K. A., Malanchini, M., Rimfeld, K., Shakeshaft, N., & Kovas, Y.
- Affiliations
- Goldsmiths University of London (GB)
- King's College London (GB)
- Corresponding author
- Kovas, Yulia
- Venue
- Scientific Reports
- Published
- 2018-09-12
- Volume
- 8
- Issue
- 1
- Pages
- 13653-13653
- ISSN
- 2045-2322 (ISSN-L)
- PMC
- PMC6135826
- OpenAlex
- W2889162143
- Cited by
- 26
- References
- 68
- Citations by year
- 2025: 5 · 2024: 2 · 2023: 4 · 2022: 4 · 2021: 3 · 2020: 4 · 2019: 3 · 2018: 1
- FWCI
- 1.46
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Scientific Reports (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Research Portal (King's College London) (publishedVersion, other-oa)
- Research Portal (Queen's University Belfast) (publishedVersion, cc-by)
- Goldsmiths Research Online (acceptedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- Funders
- Tomsk State University
- Medical Research Council (G0901245, MR/M021475/1)
- Economic and Social Research Council (ES/J500124/, ES/J500124/1, 1768126, J500124)
- Topics
- Physical Sciences › Engineering › Automotive Engineering › Spatial Cognition and Navigation
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
- Keywords
- prenatal testosterone, mental rotation, sex differences in cognition
- MeSH terms
- Adult, Cognition, Female, Humans, Male, Memory, Short-Term, Pregnancy, Prenatal Exposure Delayed Effects, Sex Characteristics, Testosterone, Twins, Dizygotic, Twins, Monozygotic, Young Adult, Memory, Long-Term, Spatial Navigation
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