As someone who's part of a startup (hrpotentials.com) trying to bring truly scientifically valid psychological testing into HR processes .... yeah. We've been at it for almost 7 years, and we're finally at a point where we can say we have something that actually makes scientific sense - and we're not inventing anything new, just commercializing the science! It only took an electrical engineer (not me) with a strong grasp of statistics working for years with a competent professor of psychology to separate the wheat from the chaff. There's some good science there it's just ... not used much.

How are you going to get around Griggs v. Duke Power Co.? AFAIK, personality tests have not (yet) been given the regulatory eye, but testing cognitive ability has.

Yeah, this is an era which is notorious for pseudoscience.