By Victoria Gosling (MSc 2018/19)
The Myers-Briggs Type Indicator, better known as the MBTI. You’ve all heard of it, and being used by 88% of Fortune 500 businesses worldwide, you’ve probably taken part in it. Hugely popular and just as controversial, how useful really is the MBTI for employee development in a changing workforce?
Interesting new research has set out to explore how useful Millennials think the Myers-Briggs Type Indicator (MBTI) is today for their professional development, and the findings could have huge implications for organisations across the globe.
WHAT IS THE MBTI AND WHY IS IT USED?
The MBTI is a personality assessment that has been hugely popular in business as a professional development tool for decades (Myers, 1962). The underlying theory is that every individual’s personality can be categorised as one of 16 types across four ‘dichotomies’: introversion vs. extraversion, intuition vs. sensing, feeling vs. thinking, and judging vs. perceiving.
In business, it is used commonly as a group training tool with the aim of improving working relationships, communication and workplace behaviours.

The MBTI has a ‘marmite’ reputation in the field of business psychology. Despite its popularity, it is often criticised by researchers for being unscientific and invalid. However, its popularity is undying, and research suggests that to truly understand its usefulness, we need to look at how it is used in practice, and discover whether it is achieving what it aims to achieve (Pittenger, 1993).
THE RESEARCH
We have been looking at the usefulness of the MBTI in today’s increasingly Millennial workforce by studying Millennials who have taken part in MBTI training sessions through their employment and hearing their views and experiences.
12 Millennials from a range of employment industries were interviewed for their thoughts, and the results were interpreted to reveal some important and surprising new knowledge.
WHAT HAVE WE FOUND?
The research has revealed important new knowledge about the usefulness of the MBTI:
- MBTI types are useful – employees find the MBTI useful to make sense of themselves and their personalities at work, but should be taken with a pinch of salt
- MBTI improves relationships at work – employees feel that the MBTI can improve their relationships with their colleagues through helping them understand and accept each other’s differences
- MBTI improves engagement and communication – employees like the MBTI because it is engaging, and encourages teams to communicate better with each other
- MBTI is useful across generations – employees believe that the useful benefits of the MBTI are relevant across generations of employees
However, some issues with using the MBTI for professional development have also been revealed:
- The effects of the MBTI are often only short-term – employees felt that with only one training session, the benefits of the MBTI are often short-lived
- Some of the information is quite personal – some employees felt that their personality feedback was quite personal, and are not always comfortable sharing it
- The MBTI is easy to fake – many employees feel that it is easy to manipulate your personality type through the questionnaire, and there may be pressure to have a certain personality type at work
- The MBTI boxes people in – employees described that there are issues with the ‘boxing in’ nature of the MBTI as Millennials in particular prefer to be seen and trained as individuals, and they also worry that boxing people in could lead to discrimination at work
WHAT DOES THIS MEAN FOR YOUR COMPANY?
The good news is that the research shows the MBTI is a useful and effective personality tool for maximising the individual and team potential of your employees. Employees believe the communicative and sociable nature of the MBTI improves team engagement and awareness, enabling them to thrive.
However, one of the most important things to understand about the research is that the implementation of MBTI training sessions makes all the difference as to how useful it will be for your team.
The research has provided guidelines for how the MBTI should be used in practice to maximise its usefulness:
GUIDELINES FOR EFFECTIVE USE OF THE MBTI

In summary, the research provides new understandings of the usefulness of the MBTI for professional development with important implications for how your company can use the personality tool.
By studying the people at the heart of your business, the employees themselves, and putting psychological theory into practice, we can see that the MBTI is useful for personal and team development, fostering great relationships and boosting team morale. However, to allow these benefits to shine through, the research has revealed key guidelines developed through the voices of the employees themselves, which must be put into practice.
