@jeanwilson and
@Starlee Thank you for joining in on this exchange of ideas! Hoping this isn’t too off topic for the Flourish Forum, but I think everyone these days know how to filter for themselves mail, junk or e-, media feeds, etc. for what is of interest.
A few comments:
@Starlee Star had used “immutable personality traits” in an earlier reply. This phrase immediately caught my attention. Two reasons: (1) I had a huge paradigm shift when reading
The Cult of Personality because it challenged the ability to measure something so dynamic; and (2) the oft-misunderstood Buddhist “no-self” doctrine (anatta) teaches a similar thing – the concept of an inherently and permanently enduring self is illusory. I find these intuitively true – I am a different person depending upon environment, who I’m with, what stage of life I’m in, what I'm doing, etc.
This excerpt from the book [Books.Google.com] states it well and forever changed my thinking about, but not joy in taking, “personality tests”. This also sums up much of what we've already shared in this thread:
"... In life, he [Walter Mischel – “The Marshmallow Test” researcher haha!!]
observed, our actions are driven not only by our personalities, but by the situations in which we find ourselves. We adjust our behavior according to our role (worker, parent, friend), to the occasion (a meeting, a family outing, a party), and to a thousand other details of our ever-changing environment. Such mutability, though "acknowledged in the abstract" by personality researchers, was ignored by them in practice, largely because it seemed to defeat the possibility of accurate measurement. From the time the very first personality tests were developed, psychologists attributed stable, consistent personalities to their subjects - not because they had proof such personalities existed, but because the task of assessment would be much easier if they did."And @Zivio - - in the book The Cult of Personality - do you recall if it debunked the MMPI?
@jeanwilson To your specific question regarding the MMPI, it’s been probably twenty years since I read the book but I found answers in a few GoodReads members’ reviews which I’ll excerpt here:
“... Murphy goes through the history and methods of different types of personality tests that were or still are popular: phrenology, Rorschach inkblot test, MMPI (Minnesota Multiphasic Personality Inventory), TAT (Thematic Apperception Test), MBTI (Myer-Briggs Type Indicator), and a few others. These tests are used, often over the objection of scientists and serious psychologists, in courts and educational institutions and corporations and other places with sometimes significant consequences. The popularity of these tests, as Murphy demonstrates over and over, has nothing to do with the rigor of their methods and the accuracy of their results ...”And here …
“The real problem with the tests though is their embrace by governments and corporations. There is an industrial testing complex and it caters to things like mandatory tests for employees, or subjecting welfare recipients the invasive MMPI to "find out" if they are addicts (in liberal Contra Costa county no less, right across the bay from me.) This is all nonsense, and Paul is good at pointing out how it impersonalizes the preservation of the status quo: Maybe you aren't being groomed for leadership because you have the personality of an administrative assistant.”
The author certainly came against the validity of many of the assessments, but was most seriously concerned with their misuse. I hadn’t included the full title of the book earlier, but this subtitle best states her general thesis:
How Personality Tests Are Leading Us to Miseducate Our Children, Mismanage Our Companies, and Misunderstand OurselvesFor all of the above and many other great thoughts on this thread, how ever could our writing itself connote personality? I'm liking Jean's idea a well-constructed experiment and assume Star having conducted research finds it interesting. I'm still holding out for some "woo woo" factor though.

Need controls!