The issue of distinguishing high-quality execs from low-quality ones is one of the points mentioned in the Jacquart &amp; Armstrong paper that I think the article was referencing[1].<p>1. <a href="http:&#x2F;&#x2F;knowledge.wharton.upenn.edu&#x2F;wp-content&#x2F;uploads&#x2F;2014&#x2F;02&#x2F;Armstrong-paper1.pdf" rel="nofollow">http:&#x2F;&#x2F;knowledge.wharton.upenn.edu&#x2F;wp-content&#x2F;uploads&#x2F;2014&#x2F;0...</a>