(I'll stick this in PC gaming even though it includes console stuff.)
The NPD has released new statistics saying that "Year-to-date through August 2011, kids comprised 44 percent of new physical software dollar sales". This is a pretty far cry from the ESRB's statistics last year, which said that there are more gamers over the age of 50 than there are under the age of 18 (26% and 25% respectively). I can't get these things to tally.
"New physical software dollar sales" is an oddly specific term, in that it precludes used sales, downloads and F2P revenue streams, but even taking that into consideration, it seems like the numbers don't add up. One might think that this could be caused by kids simply playing more games than adults, rather than more kids playing games, but the same statistics say that 91% of kids are gamers -- a trend that clearly doesn't carry across older age-brackets. One would have to question how it's even possible that the average gamer could be 36 in that case, too.
I have no idea where these numbers come from, and suspecting that there might be some hidden motivations at play is not beneath me, but I'm really confused.