In support of 2D:4D: More data exploring its conflicting results on handedness, sexual orientation and sex differences.

ABSTRACT: In the last few years, several studies have questioned the value of the second-to-fourth digit ratio (2D:4D) as a measure of exposure to sex hormones before birth. Controversy has also extended to the 2D:4D association with individual features previously related to this exposure such as handedness and sexual orientation. Given that it has been argued that sex differences in 2D:4D could be a consequence of body-size differences, we have tested in a large sample the allometric relationship between finger lengths and body size. Our results show that the association is either allometric or isometric, depending on the analyses performed. In any case, the deviation from isometry is not large enough to explain the typically observed sex difference in this trait. We have also tested the associatio

SUBMITTER: Lupu DC 

PROVIDER: S-EPMC10443882 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature