We found that the behavioral tendencies line up with modern-day mechanisms of associative learning and even developed and validated a "behavioral tendencies questionnaire (BTQ)" that anyone can take (it's only 13 questions). The BTQ is now being studied with regard to predicting and personalizing modern mindfulness and lifestyle practices.
In their opinion pieces for the week-long series about universal basic income published in September by the Washington Post, I was struck by how both Oren Cass and Jonathan Coppage expressed a distinct lack of knowledge of the evidence we have available to inform our opinions on giving people money without strings attached, by citing none of it.
MBTI or Meyers-Briggs Personality Theory started in the early 1900's and evolved through the years into a self-analyzing tool that in some circles is cult-like. Originally started as a means to understand one's affinities and abilities in the their career, it still has yet to reach its potential in the workforce.
While an occasional passive-aggressive approach to life's problems isn't unusual, for some people manipulation and indirect communication are a way of life. Passive-aggressive people often go undetected in the office and in their social circles--at least initially--because they disguise their seething hostility with a pleasant demeanor.