The relationship between 2D:4D ratio and systemizing and empathy quotients in parents of people with autism spectrum disorders

IntroductionInterdigital 2D:4D ratio has been considered as an indicator of prenatal exposure to androgens, entailing then a smaller ratio more androgenisation. Although it has been related to systemizing and empathy dimensions in the general population, it has never been studied in parents of people with Autism Spectrum Disorders (ASDs).Objectives and aimsTo analyse the relationship between the 2D:4D ratio and these psychological variables in this population.MethodsThe sample was composed by parents of both genders of people with (n = 46) or without (n = 42) ASDs. The ratio was calculated as the mean of 3 measurements of each hand evaluated by 3 different researchers. Psychological dimensi…