Abstract
There are many theories regarding the etiology of autism, and the theory of exposure to testosterone in the womb is the most striking. In this study, anthropomorphic measurement was compared with whether the second and fourth finger and facial measurements were symmetrical in boys with a diagnosis of autism spectrum disorder (ASD) and normal childrens. For the study, 30 boys diagnosed with ASD were compared with 30 boys with normal development. Face photographs of each individual were taken digitally and measurements of eight different reference lengths were made on the face halves of individuals. In children diagnosed with autism, facial half measurements were compared among themselves and with the normal control group. On the other hand, for the detection of symmetry, the right and left hands were photographed and the lengths of the second (2D) and fourth (4D) fingers were measured. As a result of face and finger analysis, it was determined that the faces of individuals with ASD were more symmetrical than the individuals with normal development and 2D-4D finger lengths were closer to each other than the children with normal development. In addition, as the severity of autism increased, it was found that the tendency to symmetry increased on both the face and fingers. All these findings, it was thought that individuals with autism had a tendency to symmetry in the face and fingers compared to normal controls, due to the high level of testosterone exposed in the womb and consequently extreme male brain theory.