Many studies were conducted to estimate relative proportion of boys and girls with autism spectrum disorder. It is found to be around 3.5 boys to 1 girl. There appears to be a diagnostic gender bias, meaning that girls who meet criteria for ASD are at disproportionate risk of not receiving a clinical diagnosis.
Lots research has been carried out to find why are boys apparently susceptible to ASD. With the causes and origins of the disorder themselves still only vaguely understood, it’s hard for scientists to provide a definitive answer to that question.
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