Intuition:

"Does measurement of creativity throw some light on the rather nebu­lous concept of intuition? Can we measure intuition? Professor M. Westcott has shown that even elusive traits like intuition can be mea­sured. He argued that what we mean by intuition is essentially the ability to jump to conclusions on the basis of insufficient evidence; we literally take an intellectual leap instead of plodding along lines of logic to a predestined conclusion. This brief argument led to his experimental de­sign. Set your subject a problem that is insoluble as it stands. It can be solved logically if you are given a number of cues. But these are hidden, and you can ask for the first one to be disclosed, making solution a little easier. You can then ask for the second one, then the third, and so on until you feel you can guess the answer. Some people (the plodders) require to look at all or most of the cues; your intuitive person takes a leap at the solution after only receiving a few cues. This tendency can be measured reliably; in other words, a given person behaves in the same fashion time after time. And it has nothing much to do with intelligence; dull people can be intuitive, bright ones can be plodders.

But of course you can arrive at the wrong solution, whether you are intuitive or a plodder. Hence Westcott finished up with four groups: Intuitive-correct, Plodder-correct, Intuitive-wrong; Plodder-wrong. The personality characteristics showed that the intuitives were similar to creative people, the plodder to noncreative ones. Thus, this test of intu­ition could also be used to identify creativity. When we look at ge­niuses, do we find a similar distinction between those who get the answer right, and those who get it wrong? Newton and Einstein were hugely intuitive, and mostly right; Marx and Freud were hugely intuitive, and mostly wrong."

Intelligence - A New Look, Hans Eysenck