2D:4D and Self-Employment: A Preregistered Replication Study in a Large General Population Sample
复制了先前关于食指与无名指长度比（2D:4D）与自雇行为关联的发现，在2100多名德国成年人样本中未发现显著统计关联。
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 significant associations between 2D:4D and self-employment.