The Wason selection task (or four-card problem) is a logic puzzle devised by Peter Cathcart Wason in 1966. It is one of the most famous tasks in the study of deductive reasoning. An example of the puzzle is:
You are shown a set of four cards placed on a table, each of which has a number on one side and a colored patch on the other side. The visible faces of the cards show 3, 8, red and brown. Which card(s) must you turn over in order to test the truth of the proposition that if a card shows an even number on one face, then its opposite face is red?
A response that identifies a card that need not be inverted, or that fails to identify a card that needs to be inverted, is incorrect. The original task dealt with numbers (even, odd) and letters (vowels, consonants).
The importance of the experiment is not in justifying one answer of the ambiguous problem, but in demonstrating the inconsistency of applying the logical rules by the people when the problem is set in two different contexts but with very similar connection between the facts.

This is an excerpt from the article Watson selection task from the Wikipedia free encyclopedia. A list of authors is available at Wikipedia.
The article Watson selection task at en.wikipedia.org was accessed 9 times in the last 30 days. (as of: 11/02/2013)
Preview image:
Original:
Search results from Google and Bing
1
1
1
Wason selection task - Wikipedia, the free encyclopedia
The Wason selection task (or four-card problem) is a logic puzzle devised by Peter Cathcart Wason in 1966. It is one of the most famous tasks in the study of ...
2
>30
2
The Wason Selection Task 1 - Philosophy Experiments
An interactive treatment of the Wason Selection Task.
www.philosophyexperiments.com/wason/
3
>30
3
Here is the general structure of a Wason selection task
The Wason Selection Task. Here we will show you some examples of Wason selection tasks. We will also show you how the mind sees each kind of rule.
www.cep.ucsb.edu/socex/wason.htm
4
>30
4
The Splintered Mind: The Wason Selection Task and the Limits of ...
Feb 16, 2011 ... The famous Wason Selection Task runs like this: You are to imagine four cards, each with a number on one side and a letter on the other side.
5
>30
5
Suppose that I have a pack of cards each of which has a letter written on one side and a number written on the other side. Suppose in addition that I claim the ...
www.rpi.edu/~brings/SELPAP/LMINDS/lminds.cogsci/node3.html
6
>30
6
Humanities 100 -- Lecture notes on Evolutionary Psychology
The Wason selection task was devised by Peter Wason in 1966. Karl Popper had postulated that science is based on hypothetico-deductive reasoning, in which ...
www.ling.upenn.edu/courses/hum100/evolutionary_psychology.html
7
>30
7
Cheating on the Brain : The Loom - Discover Magazine Blogs
May 2, 2005 ... The Wason Selection Task has become the center of the debate over evolutionary psychology. Some critics, such as the French psychologist ...
blogs.discovermagazine.com/loom/2005/05/02/cheating-on-the-brain/
8
>30
8
CMSC 828D Report 4 - Preeti Bhargava (prbharga@cs.umd.edu). Wason Selection Task. The Wason Selection Task, is one of the most repeated tests of logical ...
www.cs.umd.edu/class/fall2012/cmsc828d/reportfiles/bhargava4.pdf
9
>30
9
confirmation from a logical point of view; Wason's selection task has been used .... It has been claimed that Wason's selection task has generated more psycho- ...
fitelson.org/confirmation/nickerson.pdf
10
>30
10
Motivated Reasoning and Performance on the Wason Selection Task
on the Wason Selection Task. Erica Dawson. Thomas Gilovich. Dennis T. Regan. Cornell University. People tend to approach agreeable propositions with a bias ...
psych.cornell.edu/sites/default/files/Dawson.Gilo_.Regan_.pdf
Search results for "Watson selection task"
Wason selection task - Wikipedia, the free encyclopedia
The Wason selection task (or four-card problem) is a logic puzzle devised by Peter Cathcart Wason in 1966. It is one .... Cambridge: Cambridge University Press.
Fast and Loose: Interpreting Wason's Selection Task (Part I: The ...
We apply this model to Wason's Selection Task, allowing us to unify the Bayesian ... E.J. Genot University of Lund, Division of Theoretical Philosophy, E-mail: ...
[PDF]Motivated Reasoning and Performance on the Wason Selection Task
solving the four-card Wason selection task is to seek disconfirma- tion, the authors ... Cornell University, Ithaca, NY 14853; e-mail: ecd6@cornell.edu. PSPB, Vol.
[PDF]Rationality and the Wason Selection Task: A logical Account∗
involving conditionals, that is the Wason selection task, and showing how those interpretations have ... Duca Simone. University of Bristol. 1 The Question.
Wason Selection - Oxford University Press
One of the first experimental studies of human conditional reasoning was reported by Wason (1966) using what is known as 'the Wason selection task'. First you ...
Wason Selection Task - Psychology In Action
Oct 7, 2012 ... This post is the first of three on the Wason selection task (Part II), and part .... Conference of the British Psychological Society, Surrey University.
The Wason Selection Task 1 - Philosophy Experiments
An interactive treatment of the Wason Selection Task.
[PDF]Reasoning versus text processing in the Wason selection task: A ...
University ofSouthern California, Los Angeles, California ... fects in the Wason selection task do not concern how card selection is reasoned about but instead re-.
The Wason Selection Task, is one of the most repeated tests of logical reasoning in the ... study of the Wason Selection Task carried out among undergraduate.
[PDF]A Rational Analysis of the Selection Task as Optimal Data Selection
Oaksford, who is now at Department of Psychology, University of War- wick, Coventry CV4 7AL .... Wason, 1969), the reduced array selection task (RAST; e.g. ,.
Books on the term Watson selection task
Handbook of Social Psychology
Susan T. Fiske, Daniel T. Gilbert, Gardner Lindzey, 2010
The second paradigm, one that has inspired hundreds of replications, has come to be known as the Wason selection task. In the usual variant, participants are shown four cards (often just pictures of four cards on a piece of paper or computer ...
Principles of Cognitive Psychology
Michael W. Eysenck, 2001
Theoretical perspectives An interesting theoretical approach to the Wason selection task was put forward by Cosmides (1989). According to her social contract theory, humans during the course of evolution have developed cognitive strategies ...
Rhyme Or Reason: An Investigation Into the Physiological ...
Danni Bayn, 2008
Dickins, Cosmides, Reasoning, Modularity, and Wason's Task. Journal for the Teory of Social Behavior. v35(3), 341-349. Leighton, J. P., & Dawson, M. (2001). A parellel distributed processing model of of Wason's selection task. Journal of ...
The Adapted Mind : Evolutionary Psychology and the ...
Halifax Jerome H. Barkow Professor of Social Anthropology Dalhousie University, Nova Scotia, Halifax Leda Cosmides Professor of Social Anthropology Dalhousie University, Nova Scotia, John Tooby both Professors of Psychology and Anthropology University of California at Santa Barbara, 1995
The Wason Selection Task One of the most intriguing and widely used experimental paradigms for exploring people's ability to detect violations of conditional rules has been the Wason selection task (Wason, 1966; see Figure 3.3, panel a).
The New Cognitive Neurosciences
Michael S. Gazzaniga, Emilio Bizzi, 2000
FIGURE 87.1 The Wason selection task (descriptive rule, familiar content). In a Wason selection task, there is always a rule of the form If P then Q, and four cards showing the values P, not-P, Q, and not- Q_ (respectively) on the side that the ...

Blog posts on the term
Kennedy v Watson matchup a chance at SCG - AFL.com.au
Longmire considering matching Josh Kennedy on Jobe Watson to slow in-form Bomber
www.afl.com.au/news/2013-05-28/curbing-jobes-enthusiasm
PsychHub: The Watson Selection Task (1977)
Who: Peter Watson Testing: Logical ability Result: Abysmal I first discovered the Watson Selection Test in a book about the short comings of human cognition. When I came upon this test, being the narcissist that I am, thought that I would surely do well.
Senior Research Consultant - US Real Assets Towers Watson - SelectLeaders
Real Estate job network for qualified industry professionals specialized in management, brokerage, research, finance and all sectors of commercial Real Estate.
AOC Book Club: Willie Watson: England’s Most Successful Double International – All Out Cricket
Frank Garrick picks out the best ever double internationals at cricket and football, and thinks Willie Watson is greater than CB Fry, in All Out Cricket Book Club.
www.alloutcricket.com/blogs/sundries/aoc-book-club-willie-watson-englands-most-successful-double-international
Performance U. Fitness Continuing Education | Why Smart Trainers Believe Stupid Things (Part 1): Bias Toward Positive Evidence
I recently did a facebook post, which stated, “Topics such as spinal rehabilitation and biomechanics have such grey areas and so much conflicting information that we really don’t “know” anything! For example, research has continually failed to show how postural, structural or bio-mechanical factors are linked (if at all) to pain and dysfunction, or if ”compensations” are simply a normal variation in human function. Not to mention, we still have no idea (based on research evidence) as to what causes things like non-specific back pain, or what’s the “best” approach to avoid it and treat it, except for, “if it hurts, don’t do it.
nicktumminello.com/2013/03/why-smart-trainers-believe-stupid-things-part-1-bias-toward-positive-evidence/
The Splintered Mind: The Wason Selection Task and the Limits of Human Philosophical Cognition
The famous Wason Selection Task runs like this: You are to imagine four cards, each with a number on one side and a letter on the other side. Of two cards, you see only the letter side and you don't know what's on the number side.