Grandmothers Know Best

Grandmothers who have at least one child with autism could help improve understanding of the role genetics plays in the disorder.
The matriarchs are helping child psychiatrist John Constantino, of Washington University in St. Louis, identify recurring autistic behavior traits in offspring who may not qualify for a formal diagnosis but belong to the so-called broad autism phenotype, or BAP.
Researchers hypothesize that those with BAP might be more likely to pass along autism-producing genetic mutations to the next generation. But the study also highlights the inherent arbitrariness of categorizing behavior and will need a much larger sample size to produce reliable conclusions.
Source: The Atlantic

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