[vitolds]

According to The Invisible Gorilla (very interesting book btw) there have been other experiments done with gamers that supposedly found improved cognitive abilities resulting from intense FPS gameplay. However, the authors of the book did more digging and concluded that some of those experiments on gamers were never independently confirmed by other experimenters. Here's an article on the subject: http://theinvisiblegorilla.com/blog/2010/04/20/the-limits-of...

[Shorel]

That sentence is not entirely clear to me.

Did it imply that the experiments were never repeated or that the experiments were repeated and the results were negative?

[vitolds]

results were negative.