Standardized tests are rarely job tests. Non-job-specific standardized tests may eliminate bias with regard to what they are designed to measure, but the choice of such a test itself introduces bias to the extent that the test favors one group over another in ways which do not reflect the job for which it is given, <i>even if</i> it is unbiased in what it is intended to measure. (This is the basic reason behind the case that is often mispresented as outlawing standardized IQ tests in hiring, which did not actually do that but instead required that, to the extent that such tests disproportionately disqualified members of a protected class, that there be evidence that the test was a real measure of performance on the job for which it was used as a hiring filter.)