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2D:4D finger ratio in Slovak autism spectrum population
P Krajmer1, M Spajdel, A Kubranska
1Institute of Physiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia. krajmerpeter@gmail.com
Abstract:
Previous studies have revealed that autism may arise as the result of exposure to high concentrations of prenatal testosterone. Ratio of second and fourth digits (2D:4D) is usually used as a proxy for prenatal testosterone. In this study, 2D:4D in 56 boys with ASD and in 32 control boys was measured. We found that the 2D:4D in ASD boys were lower than the ratio in control boys. These findings are discussed with reference to the "extreme male-brain" theory of autism. Results achieved in this interdisciplinary research are valuable in further biological and psychological approaches in neurocognitive research and diagnostics of children from ASD (Tab. 1, Ref. 38).
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