Looks like the answer is “yes”.
Here’s a quote…
Brain imaging shows playing Tetris leads to a thicker cortex and may also increase brain efficiency, according to research published in the open access journal BMC Research Notes. A research team based in New Mexico is one of the first to investigate the effects of practice in the brain using two image techniques.
(Bolding mine.)
I was digging through Yann Klimentidis’ Weblog, when I came across this article (again) where he talks about a paper entitled “The evolution of the social brain: Anthropoid primates contrast with other vertebrates” (PDF) that came out in Proceedings of the Royal Society, B. Here’s an excerpt from Yann’s post….
The interesting thing that they find in this paper is that, in non-primate taxa, pairbonded species have larger brain sizes than would be predicted for group size. So there’s something about monogamy or related to monogamy that requires more brain power. In primates this effect does not happen. For them, those species that live in the largest groups have the larger brains. The authors give a short explanation as to why the pattern does not hold in primates, namely because in primates “these bonded relationships have been generalized to all social partners”….
(Emphasis mine.)
Read the rest of Yann’s comments post here…
(In case you don’t know why people tend to care about big brains… it’s because bigger brains are positively correlated with increased intelligence.)