The Myers Briggs test divides all of humanity into just sixteen psychological types. Myers and Briggs created these indicators at a time when women were entering the workforce en masse due to the war.
They assumed that it would help them know which tasks they would feel most comfortable with. Perhaps this made some sense in the 40s, especially if we think that psychology was taking its first steps. What do labor consultants who continue to use the MBTI indicator 80 years later believe they are measuring? We have all succumbed to the promise of quick fixes in tests, including those that measure intelligence.