Here is a great article by Lou Adleron. Pay special attention to number 5. It’s one of the reasons that PI® clients use the Predictive Index® system for both selection and management.
The prime reason: they’re anti-talent and anti-diversity, aside from being terrible predictors of future success.
Some naysayers use the legal angle as their excuse for maintaining the status quo.
To debunk this, I engaged David Goldstein, a pre-eminent legal authority from Littler Mendelson (the largest U.S. labor law firm) to compare the idea of using a performance-based job description to the traditional job description.