I thought it was pretty interesting.
"It's a hard pill to swallow, but if you're over 24 years of age you've already reached your peak in terms of your cognitive motor performance, according to a new study. In one of the first social science experiments to rest on big data, the researchers investigate when we start to experience an age-related decline in our cognitive motor skills and how we compensate for that."
The full article: http://www.sciencedaily.com/releases/2014/04/140414172240.htm
The original studie as published in Plos One:
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0094215