The test involved is called the Wonderlic Personnel Test, and is a different matter from IQ although the creator of the test claims comparability. A Wonderlic s

The test involved is called the Wonderlic Personnel Test, and is a different matter from IQ although the creator of the test claims comparability. A Wonderlic score of 20 is intended to be equivalent to an IQ score of 100 (e.g. the median), although it's questionable how well it aligns with IQ which is tested using a pretty significantly different methodology - most significantly, completion time is a major factor in the Wonderlic (it is designed to be too long to complete within the short allotted time and the number of questions the candidate completes is a major factor in scoring), which is much less the case for IQ tests. The use of the Wonderlic is actually surprisingly widespread if you haven't been exposed to the world of industrial psychology. It's supposed to be a good way to screen people for suitability for all kinds of jobs, and there is research to show that people with higher Wonderlic scores are generally more successful in their careers. I do not know of any research suggesting that individuals with a "too high" Wonderlic score are more likely to turn over, although there's certainly a strong cultural belief that this is the case. The Wonderlic has been subject to quite a bit of criticism. First, it is available in a set of multiple test forms and it is well-known that some of the test forms are more difficult than others, so you cannot really compare scores between test forms like you would expect. There are probably still employers doing this even though the vendor now recommends against. Second, several of the questions are specifically related to uncommon vocabulary, and the questions further date back to the 1940s so a couple of them are somewhat archaic. This creates a strong preference against non-native English speakers. More generally, the Wonderlic is thought to emphasize literacy over numeracy or other areas of intelligence. Intelligence measurement is a complex topic as many ways have been tried to measure intelligence and it's not always understood how they relate to each other, as they do not necessarily correlate across people. The Wonderlic correlates well with certain intelligence measures and poorly with others, as is often the state of affairs.