came across this interesting article on an Interaction Design blog tonight. The just of it is that good typography leads to better problem solving skills ~ and even better: ligatures lead to greater happiness.

Now we typophiles may may go, "But of course." But now we have the scientific proof to back up our claims :)

It's worth noting that the article is over a year old, so new research probably indicates that ligatures cause cancer or something like that.

http://uiscape.com/2007/03/14/feeling-unhappy-try-ligatures/