Posts tagged 2015
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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PNAS: Lexical shifts, substantive changes, and continuity in State of the Union discourse, 1790–2014 by Alix Rule, Jean-Phillipe Cointet and Peter Barman

We develop a strategy for identifying meaningful categories in textual corpora that span long historic durées, where terms, concepts, and language use changes. Our approach is able to account for the fluidity of discursive categories over time, and to analyze their continuity by identifying the discursive stream as the object of interest.

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