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Article

Repeatability and interobserver error of digit ratio (2D:4D) measurements made by experts

7 Dec 2006

Abstract excerpt

The second-to-fourth digit ratio (2D:4D) is sexually differentiated (lower in men than in women), a likely biomarker for organizational (permanent) effects of prenatal testosterone, and a correlate of many sex-dependent, hormonally influenced traits and phenotypes. The extent of 2D:4D measurement repeatability across different research groups is unknown. This study assessed the repeatability and interobserver...

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PMID: 17160984
DOI: 10.1002/ajhb.20581

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