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Redmond, Sean M.; Ash, Andrea C. – Journal of Speech, Language, and Hearing Research, 2017
Purpose: Relative lengths of the index (2D) and ring (4D) fingers in humans represent a retrospective biomarker of prenatal hormonal exposures. For this reason, the 2D:4D digit ratio can be used to investigate potential hormonal contributions to the etiology of neurodevelopmental disorders. This study tested potential group differences in 2D:4D…
Descriptors: Human Body, Prenatal Influences, Physiology, Etiology