[UPDATE: 8:09 PM EASTERN STANDARD TIME: After correcting some errors on this test and article discovered by Teffec and Melo, it is now back online. If you did not get a chance to take it, you can do so now. You can register with a fake name if you want (email optional)]

I created the Pairs test because of a void I had noticed in the field of psychometrics. Although there are tests that are very culture reduced (performance subtests on the Wechsler) most of these seemed to load heavily on spatial ability. What if your testing someone who doesn’t speak English or may have never learned to read in any language, but who nonetheless has a naturally high verbal IQ?

What is needed, it seemed to me, is a test that gets at verbal, semantic, or symbolic modes of thinking but without using language. I immediately began thinking of some of the more fluid tests of verbal ability and wondered, what if we could recreate these tests with pictures instead of words.

At first I began thinking of the odd man out test (which of these is not like the others: yellow, red, blue, seven, green?) and thought, this could easily be made more culture fair by translating it into picture form. Indeed there are IQ tests like this discussed in one of Jensen’s book, but I quickly became discouraged by the error introduced by guessing. To solve this problem, I created the Pairs test where instead of guessing which of the 5 pictures is not like the others (1 in 5 chance of guessing right), you have to guess which pair of the 5 pictures ARE alike (1 in 10 chance of guessing right).

It’s unclear whether this test should be considered a measure of Verbal or Performance IQ since the medium is visual but the type of thinking required is more semantic. Either way it nicely complements the Information subest which is arguably the most crystallized subtest on the PAIS, while Pairs is the most fluid. A large Pairs > Information gap is probably indicative of cultural or educational deprivation while a large Information > Pairs gap might suggest schizophrenia, autism, dementia or brain damage though far more research is needed to validate such speculation.

The test is by no means 100% culture fair. You couldn’t give it to a hunter-gatherer. But it’s arguably culture fair enough to give to someone who never attended school, as long as they grew up in a city.

As mentioned, you can take the test here.