Real-life Examples of Confirmation Bias Illustrated by the Wason Task

📚 Quick Study Guide

• 🧠 Confirmation bias is the tendency to favor information that confirms existing beliefs or biases.
• 🧪 The Wason Selection Task is a psychological test of reasoning. Participants must turn over cards to validate a conditional rule.
• 🎯 People typically seek to confirm the rule rather than falsify it, demonstrating confirmation bias.
• 💡 A conditional statement has the form "If P, then Q." To test it, look for cases where P is true and Q is false.
• 📈 In real life, confirmation bias impacts decisions in areas like politics, science, and personal relationships.

🤔 Practice Quiz

1. Which of the following best describes confirmation bias?

   1. A) Seeking only information that supports your existing beliefs.
   2. B) Objectively evaluating all available evidence.
   3. C) Changing your beliefs based on new information.
   4. D) Ignoring all information that contradicts your beliefs.

2. In the Wason Selection Task, if the rule is "If a card has a vowel on one side, then it has an even number on the other side," which card(s) must you turn over to test the rule with the fewest moves?

   1. A) A card showing a vowel.
   2. B) A card showing a consonant.
   3. C) A card showing an even number.
   4. D) A card showing a vowel and a card showing an odd number.

3. A doctor believes a new drug cures a specific disease. Which action demonstrates confirmation bias?

   1. A) Conducting a randomized controlled trial.
   2. B) Only noting cases where patients improved after taking the drug.
   3. C) Comparing the drug's effects to a placebo.
   4. D) Publishing all study results, regardless of the outcome.

4. A person believes that all dogs are friendly. Which of the following actions would exemplify confirmation bias?

   1. A) Avoiding all dogs.
   2. B) Remembering only positive interactions with dogs.
   3. C) Researching dog breeds known for aggression.
   4. D) Acknowledging both friendly and unfriendly dog encounters equally.

5. In politics, how might confirmation bias manifest?

   1. A) Listening to diverse viewpoints.
   2. B) Seeking news sources that align with one's political views.
   3. C) Objectively analyzing policy proposals from all parties.
   4. D) Changing one's political stance based on new evidence.

6. A scientist hypothesizes that a certain plant grows faster with fertilizer A compared to fertilizer B. How would confirmation bias affect their experiment?

   1. A) Carefully measuring and recording all growth data.
   2. B) Discarding data points that don't support the hypothesis.
   3. C) Using a double-blind experimental design.
   4. D) Publishing all results regardless of the outcome.

7. You believe that a particular stock will increase in value. Which action would demonstrate confirmation bias?

   1. A) Selling the stock when it reaches your target price.
   2. B) Reading articles that predict the stock will rise.
   3. C) Diversifying your investment portfolio.
   4. D) Consulting with financial advisors who have differing opinions.