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| Why do more boys than girls receive a diagnosis of ASD? | | by BestPracticeAutism | | Thu, Dec 24 2009 | | Boys are at greater risk for nearly all developmental, behavioral, and learning disorders and are at least four times more likely than girls to receive a diagnosis of autism. The ratio increases to 10:1 with Asperger syndrome and HFA. Although there are no documented reasons for this gender difference, some researchers have hypothesized that a genetic mechanism or gender bias might play a role. It has been hypothesized that differences in brain organization might provide a protective factor for girls and lowers the risk for developing the disorder. There is also some conjecture that expression of the behavioral phenotype might be different for girls than boys. Since females are socialized differently, ASD may not be manifest in the same way as typical male behavioral signs and patterns. There may also be a gender bias associated with a reliance on male criteria with respect to the diagnostic criteria for ASD.
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