This article which is on the web takes a leaf out of the sapir whorf hypothesis which has strong and weak forms

the central idea is that language shapes the way we think or in more specific ways it says language affects the way we percieve the world..

This is a nice study which is quite informative but not the last word on the whorfian hypothesis ... we had a course on language and discussed a lot about the success rates in this and the working memory or numerosity in monkeys (they do experiments on numbers in monkeys at MIT and in tuebingen) surprisingly they have the same curves ... does it mean that there is a connection .. this is plausible but too much of an extrapolation ... this doesnt mean they are less cognitive or something like that

other papers are by roeshc, davidoff and others in 1999 and other years... if anybody is interested I can provide the conclusions from those papers tooo

my words on the issue like another writer before me... look at all the evidence and decide for yourself :-)