PLOS-1: Can Sibling Sex Ratios be used as a valid test of the prenatal androgen hypothesis of autism spectrum disorders? by Keely Cheslack-Postava, Ka-Yuet Liu, Alix Winter, and Peter Bearman

In a large, population-based sample we failed to find evidence suggesting an excess of brothers among children with autism while controlling for several threats to validity. This test cannot rule out a role of any given exposure, including prenatal testosterone, in either risk of autism or offspring sex ratio, but suggests against a common cause of both.

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Sociological Science: The Population Level Impacts of Differential Fertility Behavior of Parents of Children with Autism by Kinga Makovi, Alix Winter, Kayuet Liu, and Peter Bearman

This study sheds light on when parents suspect autism. We find that parents’ fertility behavior changes relative to matched controls very early after the birth of a child who will later be diagnosed with autism.

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