I spent years running operations and used everything the corporate world offers to understand people. All the personality assessments, working-style profiles, the whole battery. I quietly used charts alongside them which produced accurate findings. They kept being right about things the assessments never saw.
So I stopped apologizing for the instrument and started engineering a method. You are not asked to believe anything. You are asked to read the findings and test them against what you already know is true about your own company.