Wason Selection Task

Background

The Wason Selection Task is a famous puzzle in logic and reasoning. It challenges you to evaluate a simple rule and decide which pieces of information you need to check to determine whether the rule is being followed.

At first glance, it might seem easy—but most people answer it incorrectly. Psychologists have used it for decades to explore how we think, how we apply logic, and how our reasoning can change in different situations.

You’ll be shown three scenarios — two are somewhat abstract, and one will feel more familiar. For each one, your task is the same: Choose only the card or cards that must be turned over (or checked) to thoroughly test whether the rule is being broken.

There are no trick questions—just a chance to see how your mind handles logic under different conditions.


The Puzzle

Note that all answers, while recorded, are anonymous.

Your occupation is requested only for analytical purposes (e.g., do some jobs/roles typically perform better or worse on this test).

Note: You only get one shot at this! Taking the Wason Selection Task more than once could skew the results — so make it count. Seriously! Don't invent rules that aren't there, and don't make assumptions.

Ready? Let's go...

Question 1

Each card has a letter on one side and a number on the other. Which card or cards must be turned over to thoroughly test the idea that if a card has a vowel on one side, the other side must be an even number.

Question 2

Each card has a symbol on one side and a colour on the other. Which card or cards must be turned over to thoroughly test the idea that if a card has a star on one side, the other side must be green.

Question 3

Each card has a type of drink on one side and age (in years) on the other. (In other words, one side of each card shows a drink and the other side shows how old the person having that drink is.) Which card or cards must be turned over to thoroughly test the idea that if a person is drinking alcohol, they must be over 18 years old.


This Wason Selection Task is brought to you by the creator of DeePeST, the Digital Product Suggestion Tool.