For some evidence to the contrary (and the beginnings of a theory about when cognitive ability will correlate with rationality and when it won’t) try this:
Stanovich, K. E, & West. R. F. (2008). On the relative independence of thinking biases and cognitive ability. Journal of Personality and Social Psychology, 94, 672-695. JPSP08.pdf
For some evidence to the contrary (and the beginnings of a theory about when cognitive ability will correlate with rationality and when it won’t) try this:
Stanovich, K. E, & West. R. F. (2008). On the relative independence of thinking biases and cognitive ability. Journal of Personality and Social Psychology, 94, 672-695. JPSP08.pdf
(More here.)