We began last time to explore how we can err when assessing the significance of observations. We saw that the significance of an observation is the set of implications and consequences that follow from it, where the key word is follow. We like to believe that we deduce the implications and consequences from evidence and clear reasoning, but we don't always work that way, especially under pressure. Here are three phenomena that can distort assessments of significance.
- Dunning-Kruger effect
- The Dunning-Kruger effect leads to confusion between confidence and competence, and between cautious prudence and incompetence, both of which distort estimations of competence. We then assess the significance of information based on the manner of delivery, rather than the credibility of the messenger. If the messenger is non-sentient, we assess significance based on immediacy, suddenness, or directness — the non-sentient analogs of "confidence."
- For example, a report written in a confident style, well-documented, and presenting conclusions without acknowledging uncertainties, can be more influential than an equally well-drafted report presenting the same conclusions but also clearly explaining the uncertainties.
- Optimism bias
- This bias is the tendency to underestimate the likelihood of unwelcome events befalling us personally, compared to the likelihood of similar events befalling others. It can cause errors in estimating risk probabilities. See "Wishful Interpretation: I," Point Lookout for November 11, 2015.
- Under the influence of this bias people might express sentiments such as:
- No need for concern, that will never happen
- No need for concern, that will never happen twice in a row
- Yes, but they won't realize it until it's too late to respond
- Semmelweis effect
- The Semmelweis Wishful thinking can result from
errors in assessing the significance
of our observations, because we
don't always assess significance
logically from objective evidenceeffect is the tendency to reject new approaches or theories not on the basis of disconfirming evidence, but because they contradict established practice and belief. It's named for a Hungarian physician, Ignac Semmelweis (1818-1865), who proposed in 1847 that high maternal mortality rates in a Vienna maternity ward were due to physicians treating mothers directly after performing autopsies without washing their hands. This practice seems evidently abhorrent now, but the germ theory of disease wasn't firmly established until Pasteur's work 15 years later. As the story goes, Semmelweis met fierce resistance because of the essence of his theory, but that interpretation of the cause of the resistance has been discredited [Nuland 1979]. Still, the name has stuck. The Semmelweis effect can cause us to resist change even in the presence of mounting evidence of the need for it.
- Under the influence of the Semmelweis effect, people might express sentiments such as:
- It didn't work that one time, but let's try again. I'm sure it will work out.
- If you're right, then we just wasted two months. You must be wrong.
- We don't have the resources for that. To get this job done, we agreed we must take a few shortcuts.
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For more about the Dunning-Kruger Effect, see "The Paradox of Confidence," Point Lookout for January 7, 2009; "How to Reject Expert Opinion: II," Point Lookout for January 4, 2012; "Devious Political Tactics: More from the Field Manual," Point Lookout for August 29, 2012; "Overconfidence at Work," Point Lookout for April 15, 2015; "Wishful Thinking and Perception: II," Point Lookout for November 4, 2015; "Cognitive Biases and Influence: I," Point Lookout for July 6, 2016; and "The Paradox of Carefully Chosen Words," Point Lookout for November 16, 2016.
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More articles on Problem Solving and Creativity:
- On Beginnings
- A new year has begun, and I'm contemplating beginnings. Beginnings can inspire, and sometimes lead to
letdown when our hopes or expectations aren't met. How can we handle beginnings more powerfully?
- Knowing Where You're Going
- Groups that can't even agree on what to do can often find themselves debating about how
to do it. Here are some simple things to remember to help you focus on defining the goal.
- Forward Backtracking
- The nastiest part about solving complex problems isn't their complexity. It's the feeling of being overwhelmed
when we realize we haven't a clue about how to get from where we are to where we need to be. Here's
one way to get a clue.
- How to Reject Expert Opinion: I
- When groups of decision-makers confront complex problems, they sometimes choose not to consult experts
or to reject their advice. How do groups come to make these choices?
- Wishful Thinking and Perception: I
- How we see the world defines our experience of it, because our perception is our reality. But how we
see the world isn't necessarily how the world is.
Forthcoming issues of Point Lookout
- Coming July 18: High Falutin' Goofy Talk: III
- Workplace speech and writing sometimes strays into the land of pretentious but overused business phrases, which I like to call high falutin' goofy talk. We use these phrases with perhaps less thought than they deserve, because they can be trite or can evoke indecorous images. Here's Part III of a collection of phrases and images to avoid. Available here and by RSS on July 18.
- And on July 25: Exploiting Functional Fixedness: II
- A cognitive bias called functional fixedness causes difficulty in recognizing new uses for familiar things. It also makes for difficulty in recognizing devious uses of everyday behaviors. Here's Part II of a catalog of deviousness based on functional fixedness. Available here and by RSS on July 25.
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- The Race to the South Pole: The Power of Agile Development
- On 14 December 1911, four men led by Roald
Amundsen reached the South Pole. Thirty-five days later, Robert F. Scott and four others followed. Amundsen
had won the race to the pole. Amundsen's party returned to base on 26 January 1912. Scott's party perished.
As historical drama, why this happened is interesting enough. Lessons abound. Among the more important
lessons are those that demonstrate the power of the agile approach to project management and product
development. Read more about this program. Here's
a date for this program:
- Ohio National Insurance, 1 Financial Way, Blue Ash, OH: July
Monthly Meeting, Cincinnati
chapter of the International Institute of Business Analysis. Register now.
- Ohio National Insurance, 1 Financial Way, Blue Ash, OH: July 17, Monthly Meeting, Cincinnati chapter of the International Institute of Business Analysis. Register now.
- The Power Affect: How We Express Our Personal Power
- Many people who possess real organizational power have a characteristic demeanor. It's the way they project their presence. I call this the power affect. Some people — call them power pretenders — adopt the power affect well before they attain significant organizational power. Unfortunately for their colleagues, and for their organizations, power pretenders can attain organizational power out of proportion to their merit or abilities. Understanding the power affect is therefore important for anyone who aims to attain power, or anyone who works with power pretenders. Read more about this program.