The use of the Cranwell tests is patchy - some Units use them and some don't. It often causes controversy when stupid results are indicated. e.g. people who have worked for years as good observers who then "fail" the test.
Of course, it can be used to ease the work of recruiters of how to select a few people from a large group of candidates.
It is basically a watered down military aircrew assessment - can you rub your tummy and pat your nose at the same time stuff + other things too. There may be some reluctance to provide details - these are the sort of games that get easier if you practice them - but maybe that's why you are asking
MG is correct that if you can get into the ASU forum that would be the best place to ask - if they will tell you.................