The DOI matches its Crossref record; 50 of the 50 references it cites were found in a registry or an index.
Second to fourth digit length ratio (2D:4D) and adult sex hormone levels: New data and a meta-analytic review
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
The Handbook of Research Synthesis.
Howel, D., Cooper, H., & Hedges, L. V. (1995) · Biometrics · doi:10.2307/2533295 · Cited by 3,642
The Handbook of Research Synthesis.
Light, R. J., Cooper, H., & Hedges, L. V. (1994) · Journal of the American Statistical Association · doi:10.2307/2291021 · Cited by 1,868
Parametric measures of effect size.
Rosenthal, R. (1994) · Cited by 1,856
Manning, J. T., Scutt, D., Wilson, J., & Lewis-Jones, D. I. (1998) · Human Reproduction · doi:10.1093/humrep/13.11.3000 · Cited by 1,467
2nd to 4th digit ratios, fetal testosterone and estradiol
Lutchmaya, S., Baron-Cohen, S., Raggatt, P., Knickmeyer, R., & Manning, J. T. (2004) · Early Human Development · doi:10.1016/j.earlhumdev.2003.12.002 · Cited by 919
Human behavioral sex differences: A role for gonadal hormones during early development?
Collaer, M. L., & Hines, M. (1995) · Psychological Bulletin · doi:10.1037//0033-2909.118.1.55 · Cited by 766
Chamberlain (2005) · doi:10.1016/j.neubiorev.2004.11.004 · Cited by 529
Digit Ratio: A Pointer to Fertility, Behavior, and Health
Manning, J. T. (2002) · Cited by 517
Masculinized Finger Length Patterns in Human Males and Females with Congenital Adrenal Hyperplasia
Brown, W. M., Hines, M., Fane, B. A., & Breedlove, S. M. (2002) · Hormones and Behavior · doi:10.1006/hbeh.2002.1830 · Cited by 494
The 2nd:4th digit ratio, sexual dimorphism, population differences, and reproductive success
Manning, J. T., Barley, L., Walton, J., Lewis-Jones, D. I., Trivers, R. L., Singh, D., Thornhill, R., Rohde, P., Bereczkei, T., Henzi, P., et al. (2000) · Evolution and Human Behavior · doi:10.1016/s1090-5138(00)00029-5 · Cited by 413
Cited by
Testosterone and Depression: Systematic Review and Meta-Analysis
Zarrouf, F. A., Artz, S., Griffith, J., Sirbu, C., & Kommor, M. (2009) · Journal of Psychiatric Practice · doi:10.1097/01.pra.0000358315.88931.fc · Cited by 383
Testosterone exposure, dopaminergic reward, and sensation-seeking in young men
Campbell, B. C., Dreber, A., Apicella, C. L., Eisenberg, D. T. A., Gray, P. B., Little, A. C., Garcia, J. R., Zamore, R. S., & Lum, J. K. (2010) · Physiology & Behavior · doi:10.1016/j.physbeh.2009.12.011 · Cited by 133
Fusar-Poli, L., Rodolico, A., Sturiale, S., Carotenuto, B., Natale, A., Arillotta, D., Siafis, S., Signorelli, M. S., & Aguglia, E. (2021) · Clinical Psychopharmacology and Neuroscience · doi:10.9758/cpn.2021.19.1.26 · Cited by 50
James, W. H. (2014) · Journal of Theoretical Biology · doi:10.1016/j.jtbi.2014.03.036 · Cited by 19
Marí-Bauset, S., Peraita-Costa, I., Donat-Vargas, C., Llopis-González, A., Marí-Sanchis, A., Llopis-Morales, J., & Morales Suárez-Varela, M. (2022) · Autism · doi:10.1177/13623613211039950 · Cited by 10
Metadata
- Authors
- Hönekopp, J., Bartholdt, L., Beier, L., & Liebert, A.
- Venue
- Psychoneuroendocrinology
- Publisher
- Elsevier BV
- Published
- 2007-05
- Volume
- 32
- Issue
- 4
- Pages
- 313-321
- ISSN
- 0306-4530 (ISSN-L)
- OpenAlex
- W2006355460
- Cited by
- 342
- References
- 50
- FWCI
- 6.59
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Second to fourth digit length ratio (2D:4D) and adult sex hormone levels: New data and a meta-analytic review. https://app.cochat.ai/papers/10.1016/j.psyneuen.2007.01.007
- The paper
- Hönekopp, J., Bartholdt, L., Beier, L., & Liebert, A. (2007). Second to fourth digit length ratio (2D:4D) and adult sex hormone levels: New data and a meta-analytic review. Psychoneuroendocrinology. https://doi.org/10.1016/j.psyneuen.2007.01.007
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
