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About a month ago a study (abstract) was published about how a father's age affects the psychiatric health of his children. Due to a misleading press release about the study's results, it was widely reported that children born to father over 45 years of age were 3.5 times more likely to have autism, 13 times more likely to have ADHD, 2 times more likely to have a psychotic disorder, 25 times more likely to have bipolar disorder, and 2.5 times more likely to have suicidal behavior or a substance abuse problem.
But statistical analysis is hard and non-intuitive, particularly for people who aren't expert statisticians. It turns out that the real-life rates of psychiatric problems are significantly less, putting this most recent study's results in line with those of previous related studies.
(Score: 2, Informative) by Serial_Priest on Tuesday April 08 2014, @09:45PM
For those interested, here is the study: http://www.pnas.org/content/early/2012/06/05/12020 92109.abstract [pnas.org] ("Delayed paternal age of reproduction in humans is associated with longer telomeres across two generations of descendants")
It seems the "male biological clock" doesn't have the same limitations as the female variant, and that quite a few journalists did not hesitate to misrepresent statistics to argue the opposite.