While decades of psychological research have documented humanity’s more irrational tendencies, it is only relatively recently that scientists have started to measure how that irrationality between individuals, and whether that variance is related to measures of intelligence. They are finding that the two are far from perfectly correlated: it is possible to have a very high SAT score that demonstrates good abstract thinking, for instance, while still performing badly on these new tests of rationality – a mismatch known as ‘dysrationalia’.
