Use of Myers-Briggs, StrengthFinders, etc., can be helpful in understanding a person and their fit.  But such should not take the place of a thorough interview and in-depth 360 degree reference checking.  One client hired us to re-do a search another search firm, which strongly pushes an assessment tool based on one’s motivation, had done.  The candidate hired thought they had an excellent management style and it was far from that.  Tests require a person to tell you how they view themselves…and that may be far from accurate.