Archive for category Reflective practice
In part 1 of this series, I gave my take on some of the weaknesses and limitations of MBTI and its underlying Jungian theory of psychological types. In part 2, I tried to reconstruct Jung’s ideas into a rather over-simplified model of how we deal with information and make decisions, leaving out a few of his most troublesome assumptions. Now I will explain how this model influences my work with clients and how I actually use MBTI in practice.
In defence of dynamics
Before I do that though, having criticised the MBTI, I would like to balance things a little.
One of the criticisms levelled at the MBTI is that, compared to other psychometric instruments, it has poor test-retest reliability. This means that if the same person answers the questionnaire on two separate occasions they might come out with different results. This is a fair criticism if what you are trying to measure is a fixed trait which ought not to change over time. Part of this is probably due to the arbitrary allocation of people in the middle of the spectrum to one preference or another, something I have never been comfortable with.
However, if Jung’s model is not really about fixed preferences between opposing traits, but a dynamic balance of complementary functions that depend on the needs of the situation as much as the natural inclinations of the individual, then the low reliability of the MBTI may be giving an insight into the adaptability of our brains.
One way of testing this situational hypothesis might involve getting people to focus on a scenario geared towards a particular mode of thinking before they complete the questionnaire. If you made them think about the same scenario before they did it again then test-retest reliability ought to get better, and if you gave them a different type of scenario it should get worse. If anyone knows of any research along these lines, please let me know.
Tristram Hooley who writes the blog Adventures in career development (and who also happens to be the Head of the International Centre for Guidance Studies (iCeGS) at the University of Derby) recently posted about a symposium that he was hosting. He wanted to develop a number of questions to get the discussion going. I liked his questions about guidance so much that I’m just quoting them here: