What is the Dunning-Kruger effect?

In 1999 two social psychologists David Dunning and Justin Kruger identified a cognitive bias based on a bank robber who believed that lemon juice would make his face invisible, as lemon juice makes ink invisible. Setting off to rob his first bank, bank robber McArthur Wheeler waved at the CCTV cameras as he entered and left the bank. He was arrested soon after and exclaimed “But I wore lemon juice!”.

Similar events have occurred in South Africa where bank robbers and shoplifters have attached bottles of muti (traditional African medicine) to their belts thinking that this made them invisible. However, this is more a story of witchcraft rather than incompetence or over-estimating their abilities.

The Dunning-Kruger Effect is where individuals who have limited knowledge, competence or ability, wrongly imagine themselves to be very good at something they are obviously not!

In history there are many examples of the Dunning-Kruger effect. Hitler is but one example. He considered himself a great artist, but twice failed entry to Vienna’s Academy of Fine Arts. The admissions committee decided his drawing skills were “unsatisfactory”. Hitler also thought he was a military genius, and believed he could be the only man apart from Genghis Khan to successfully invade Russia. Sadly, this delusion led to the unnecessary deaths and suffering of tens of millions of people.

Does Dunning-Kruger effect have any relevance for us as managers?

Of course it does!

There are two effects:

1. Not only are people incompetent, and this
2. Incompetence robs them of the ability to realise how incompetent they are!

To put in bluntly, at the extreme end of the Dunning-Kruger Effect, stupid people do not realise they are stupid. A little knowledge can be a dangerous thing!

This can have unfortunate consequences. Hitler is but an extreme example.

Many incompetent managers suffer from the Dunning-Kruger effect. A lack of self-awareness is a common sign, although not all managers who lack self-awareness suffer from the Dunning-Kruger Effect. Managers who overestimate their abilities often are unable to recognise their own limitations. This leads to mistakes and poor decision making. Believing themselves to be experts in the field, they are often unwilling to seek feedback or ask for help,

Do you have any examples in your work life of the Dunning-Kruger effect?

I certainly do!

Here are three examples to consider.

1. Over-estimate their own skills and achievements. For example, a dictatorial manager who is a poor communicator, micromanages and fails to listen. They believe they are a natural leader and refuse to acknowledge the negative impact their management style is having on their team.  This lack of self-awareness breeds frustration and low morale and can lead to a toxic work environment. Ultimately this harms the organisation’s success. I once assisted a fellow consultant in an organisation where the CEO thought because he had a PhD that he was the smartest person in the organisation and overestimated his success, despite evidence to the contrary. Morale was poor and the business was losing money.
2. Don’t recognise the skills and knowledge of others. The manager who ‘knows best’ and fails to consult with their team. This can manifest in a variety of ways, such as being very vocal about one’s views, even in the face of evidence to the contrary, or being unwilling to consider alternative perspectives, believing they are the only one who truly understands the situation. This thwarts team building and staff development. In the example above, the CEO made the statement that there were ‘no real managers’ in the organisation and they were in reality ‘just clerks’. He never consulted them, asked for their opinions or sought their considerable expertise and experience. After he exited the business, we sought to engage the staff through a series of workshops seeking their input. The turnaround in morale was immediate.
3. Resistance to Feedback and Constructive Criticism.  People exhibiting the Dunning-Kruger Effect may be resistant to feedback and constructive criticism. They may see any criticism of their views or actions as a personal attack, leading to defensiveness and an unwillingness to listen to others’ perspectives. Also, they refuse to recognise their own mistakes. This lack of insight often leads to poor team morale. I can remember a situation when I was in business where one of our partners refused to accept any feedback when we brought in an external consultant to review the business. His reaction was to sack the consultant.  

Encourage Self-Reflection and Self-Assessment

If you recognise the Dunning-Kruger Effect in yourself, how should you deal with it?

• Encourage Self-Reflection

One key strategy for dealing with the Dunning-Kruger Effect is to encourage self-reflection and self-assessment. People who are aware of their own limitations and weaknesses are more likely to seek help and feedback, leading to better decision making and personal growth.

• Provide Constructive Feedback

Another strategy is to provide constructive feedback to people who may be exhibiting the Dunning-Kruger Effect. It’s important to approach feedback in a non-judgmental way, focusing on specific behaviours or actions rather than criticising the individual as a whole.

• Promote a Growth Mindset

A growth mindset can also help to combat the Dunning-Kruger effect. People who believe that their abilities can improve with effort and practice are more likely to seek feedback and learn from their mistakes, leading to personal and professional growth.

In conclusion by understanding the signs of the Dunning-Kruger Effect, we can better recognise it in ourselves and others, and take steps to address it. By encouraging self-reflection, providing constructive feedback, promoting a growth mindset, and fostering a culture of humility and openness, we can overcome the limitations of the Dunning-Kruger Effect and achieve our personal and professional goals.

What do you think?

@thenetworkofconsultingprofessionals