2D:4D and Self-Employment: A Preregistered Replication Study in a Large General Population Sample

@article{Fossen20212D4DAS,
  title={2D:4D and Self-Employment: A Preregistered Replication Study in a Large General Population Sample},
  author={Frank M. Fossen and Levent Neyse and Magnus Johannesson and Anna Dreber},
  journal={Entrepreneurship Theory and Practice},
  year={2021},
  volume={46},
  pages={21 - 43}
}
The 2D: 4D digit ratio, the ratio of the length of the second finger to the length of the fourth finger, is often considered a proxy for testosterone exposure in utero. A recent study reported, among other things, an association between the left-hand 2D:4D and self-employment in a sample of 974 adults. In this preregistered study, we replicate the 2D:4D results on a sample of more than 2100 adults from the German Socioeconomic Panel-Innovation Sample (SOEP-IS). We find no statistically… 

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References

SHOWING 1-10 OF 47 REFERENCES
Digit Ratio (2D:4D) Predicts Self-Reported Measures of General Competitiveness, but Not Behavior in Economic Experiments
TLDR
This study empirically examines the relationship between 2D:4D and individual competitiveness, a behavioral trait that is found to be sexually dimorphic, and finds a negative and statistically significant relationship between psychometric self-reported measures of competitiveness and right hand digit ratios in both studies.
The digit ratio (2D:4D) and economic preferences: no robust associations in a sample of 330 women
TLDR
In a sample of 330 women, there are no robust associations between any of these economic preferences and 2D:4D, and the two regression specifications which are statistically significant have not previously been reported and are not in the expected direction.
Digit ratio (2D:4D) in Klinefelter's syndrome
TLDR
It is concluded that KS males have mean 2D:4D values similar to those found in female population norms, and testosterone supplementation in KS males may be most common for individuals with low right 2D to fourth digit length.
Testosterone and Tendency to Engage in Self-Employment
TLDR
The twin testosterone transfer effect in a sample of opposite-sex and same-sex twins from the National Survey of Midlife Development (MIDUS I) in the Unites States is examined to provide additional support for the marginally significant (two-tailed test) positive association between testosterone and self-employment.
Meta‐analysis of digit ratio 2D:4D shows greater sex difference in the right hand
TLDR
The sex difference in the length ratio of the second and fourth digits (2D:4D), which likely reflects prenatal testosterone levels in humans, is described and the loss of reliability observed in 2D: 4D based on self‐measured finger lengths is inferred.
The Second to Fourth Digit Ratio (2D:4D) in a Japanese Twin Sample: Heritability, Prenatal Hormone Transfer, and Association with Sexual Orientation
TLDR
The existence of non-shared environmental influences that affect both 2D:4D and sexual orientation are suggested, which are in the predicted direction according to the prenatal hormone transfer hypothesis.
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