[tokenadult]

I think your point is well made that what you can sample in a work-sample test is not the full set of long-term skills that benefit a for-profit company. That's why the predictive validity of work-sample tests is only about .50 across a wide range of industries. But the key point is that EVERY other hiring procedure, except for general cognitive ability tests, has lower validity, so a company is throwing away a lot of opportunity to hire good workers if it doesn't use a combination of work-sample testing and cognitive ability testing for all of its hiring. Your sound analysis can be turned around to using interviews as a hiring procedure--which is much more commonplace than using work-sample testing as a hiring procedure--to make the correct point that an applicant who looks good in an interview may not be a "team player" once hired. Any hiring procedure is a sample of applicant behavior, not fully representative of how the worker will behave on the job after being hired. But work-sample tests get much closer to what the worker will do on the job long-term than any other procedure besides general cognitive ability tests. Because work-sample tests and cognitive ability tests each have incremental validity when added to the other, it's best to use both in combination to get a hiring procedure with somewhat more than .50 validity in finding good workers.