"adult mice born to older fathers have differently shaped brains and are generally more anxious and less adventurous than those fathered by younger animals. ... brain scans of the mice showed those born to older fathers had thicker cerebral cortexes."
The research team's senior investigator, John McGrath explains that "What we've found in the mice is reminiscent of autism because there's some reasonable evidence about early brain overgrowth in autism". McGrath also stated that the results need to be replicated before they are given scientific validity.
The couriermail.com.au article by reporter Janelle Niles states that previous population studies have found a six-times increased likelihood of autism than those born to dads in their 20's. Unlike my friends at Autism Street I am no statistician but on a common sense level, if the article information is correct, a six-times increased likelihood of autism in offspring for Dad's in their 40's compared to Dads in their 20's would seem to be .... statistically significant ... one which should be the focus of further research.