CPP, Inc., is the publisher of the Myers-Briggs assessment, and its Director of Research Rich Thompson, PhD., has an in-depth response to Grant's article which has been circulating on various websites this week. Here in the intro to Thompson's article, as well as the link to his complete response:

By Rich Thompson, PhD, Director of Research, CPP
The validity (https://www.cpp.com/campaigns/mbti_manual_supp.aspx) and reliability of the Myers-Briggs Type Indicator® (MBTI®) instrument has been documented in thousands of peer-reviewed journals and case studies, and its publisher, CPP, Inc., freely makes its supporting data publicly available. I should know — I head the research department and team of psychologists that’s tasked with keeping the MBTI instrument up to date. In fact, its efficacy is so well-established that I find myself scratching my head when I come across the kind of criticism recently levied by Adam Grant....
Read the complete article here:
http://www.cppblogcentral.com/cpp-connect/the-myers-briggs-assessment-is-no-fad-its-a-research-based-instrument-that-delivers-results/

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