When groups make decisions about complex issues, and when complete information isn't available, they do the best they can. Sometimes they believe they're doing the best they can, but they're mistaken in that belief. One pattern that leads groups (and individuals) astray is known as confirmation bias — the tendency to search for or interpret information so as to confirm one's preconceptions.
We make decisions based in part on prevailing beliefs — what we hold to be true about the matter at hand. Confirmation bias distorts our decision-making in three ways. It limits our access to information, it causes us to undervalue information that contradicts prevailing beliefs, and it causes us to overvalue information that confirms prevailing beliefs. Confirmation bias tends to degrade decision quality.
Oddly, even the most educated, intelligent, and accomplished among us are vulnerable to confirmation bias. Here are three indicators that a group discussion might be distorted by confirmation bias.
- Anecdotal evidence
- As a group debates the validity of a hypothesis, advocates might offer an anecdote — a narrative about a specific incident — to confirm their position. Anecdotes, even if true, cannot prove anything. They can only disprove, and to do that, they must be true.
- Anecdotes can serve only two purposes. They can be illustrations of a hypothesis, or they can disprove a hypothesis. And numbers make no difference. A million anecdotes consistent with a hypothesis do not outweigh one anecdote that provides a counterexample.
- Eerie correlations of unlikely conditions
- Some believeConfirmation bias tends to
degrade decision quality that hypotheses can be proven by patterns of unlikely events or conditions. Most noticeable when used by conspiracy theorists, this line of pseudo-reasoning is very common, though less noticed, in more mundane discussions as well. For instance, it might be used in product development, as a group speculates about the possible motives or next moves of a competitor, based on a series of hires the competitor recently made.
- A humorous example of this kind of thinking is the probably apocryphal quote often attributed to the late actor Paul Newman: "24 hours in a day, 24 beers in a case. Coincidence? I think not."
- Evidence consisting of failure to disprove
- Failure to disprove a hypothesis doesn't, in itself, constitute proof of the hypothesis — it simply leaves the hypothesis standing. Some feel that if fifteen attempts to disprove fail, and only two succeed, then the odds are good that the hypothesis is true.
- Not so. If an attempt to disprove the hypothesis does succeed, then the hypothesis is disproved. There's wiggle room only if the various attempts to disprove are each suggestive, but inconclusive.
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More articles on Emotions at Work:
- Reverse Micromanagement
- Micromanagement is too familiar to too many of us. Less familiar is inappropriate interference in the
reverse direction — in the work of our supervisors or even higher in the chain. Disciplinary action
isn't always helpful, especially when some of the causes of reverse micromanagement are organizational.
- Unintended Consequences
- Sometimes, when we solve problems, the solutions create new problems that can be worse than the problems
we solve. Why does this happen? How can we limit this effect?
- Inappropriate Levels of Regard
- The regard we have for others as people is sometimes influenced by the regard we have for the work they
do. Confusing the two is a dangerous error.
- Preventing Toxic Conflict: I
- Conflict resolution skills are certainly useful. Even more advantageous are toxic conflict prevention
skills, and skills that keep constructive conflict from turning toxic.
- Heart with Mind
- We say people have "heart" when they continue to pursue a goal despite obstacles that would
discourage almost everyone. We say that people are stubborn when they continue to pursue a goal that
we regard as unachievable. What are our choices when achieving the goal is difficult?
Forthcoming issues of Point Lookout
- Coming October 23: Power Distance and Teams
- One of the attributes of team cultures is something called power distance, which is a measure of the overall comfort people have with inequality in the distribution of power. Power distance can determine how well a team performs when executing high-risk projects. Available here and by RSS on October 23.
- And on October 30: Power Distance and Risk
- Managing or responding to project risks is much easier when team culture encourages people to report problems and question any plans they have reason to doubt. Here are five examples that show how such encouragement helps to manage risk. Available here and by RSS on October 30.
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- The Race to the South Pole: Lessons in Leadership
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. But to organizational leaders, business analysts, project sponsors, and project managers, the story is fascinating. We'll use the history of this event to explore lessons in leadership and its application to organizational efforts. A fascinating and refreshing look at leadership from the vantage point of history. Read more about this program.
Here's a date for this program:
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44017: November 7,
Kerzner Lecture Series/International Project Management Day, sponsored by Baldwin Wallace University and the Northeast Ohio Chapter of the Project Management Institute.
- Baldwin-Wallace University, 275 Eastland Road, Berea, Ohio 44017: November 7, Kerzner Lecture Series/International Project Management Day, sponsored by Baldwin Wallace University and the Northeast Ohio Chapter of the Project Management Institute. 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.