time.

neither 1 independently of each other would be a good indicator, but when you compile all the results from all the tests it paints a decent picture.

there are actually a lot of professions that use the wonderlic or similar tests, it's extremely common.

the issue of confidentiality is completely separate from the issue of should there be a cognitive aptitude test. Of course results should be secret but sadly that's not the reality. does that mean they shouldn't do the test still? no.