Sorry, there is no simple answer.
Testing is a world unto itself.
Simply, most personality tests identify traits based upon a profile of ideal traits for a particular job. It depends on the conditions under which the test is given. Every test is different, according to Jeremy Robinson, who heads an executive coaching company, the Robinson Capital Corp. in New York City. Robinson says tests can be invasive or noninvasive. Noninvasive tests, such as the Meyers-Briggs Type Indicator, measure candidates' interests, skills and personality types.