2D:4D and Self-Employment Using SOEP Data: A Replication Study

24 Pages Posted: 22 Jun 2020

See all articles by Frank M. Fossen

Frank M. Fossen

University of Nevada, Reno; IZA Institute of Labor Economics

Levent Neyse

German Institute for Economic Research (DIW Berlin)

Magnus Johannesson

Stockholm School of Economics - Department of Economics

Anna Dreber

Stockholm School of Economics - Department of Economics

Multiple version iconThere are 2 versions of this paper

Date Written: April 23, 2020

Abstract

The 2D:4D digit ratio, the ratio of the length of the 2nd digit to the length of the 4th digit, is often considered a proxy for testosterone exposure in utero. A recent study by Nicolaou et al. (2018) reported an association between the left-hand 2D:4D and self-employment (in a sample of about 1,000 adults). In this preregistered study we replicate these results on a new and larger sample of about 2,600 adults from the German Socioeconomic Panel-Innovation Sample (SOEP-IS). We find no statistically significant associations between 2D:4D and self-employment and thus cannot confirm the findings of Nicolaou et al. (2018) for left-hand 2D:4D. Our estimated 99.5% confidence intervals are within an about 2 percentage points change in self-employment for a one standard deviation change in the 2D:4D when we pool results for men and women (the association does not differ significantly between men and women). Even larger studies are needed to rule out smaller effect sizes.

Keywords: Self-employment, entrepreneurship, hormones, testosterone, digit ratio

JEL Classification: D87, M13

Suggested Citation

Fossen, Frank M. and Neyse, Levent and Johanneson, Magnus and Dreber, Anna, 2D:4D and Self-Employment Using SOEP Data: A Replication Study (April 23, 2020). Available at SSRN: https://ssrn.com/abstract=3583293 or http://dx.doi.org/10.2139/ssrn.3583293

Frank M. Fossen

University of Nevada, Reno ( email )

1664 N. Virginia Street
Reno, NV 89557-0030
United States

HOME PAGE: http://business.unr.edu/faculty/ffossen/

IZA Institute of Labor Economics

P.O. Box 7240
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Levent Neyse

German Institute for Economic Research (DIW Berlin) ( email )

Mohrenstra├če 58
Berlin, 10117
Germany

Magnus Johanneson

Stockholm School of Economics - Department of Economics ( email )

P.O. Box 6501
Sveavagen 65
S-113 83 Stockholm
Sweden
+46 8 736 9443 (Phone)

HOME PAGE: http://www.hhs.se/Faculty/showperson.htm?personid=198

Anna Dreber (Contact Author)

Stockholm School of Economics - Department of Economics ( email )

P.O. Box 6501
Sveavagen 65
S-113 83 Stockholm
Sweden

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