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The Science of Irrational Decisions

The Rat Race Trap blog has a look at one aspect of the irrational decision-making process humans employ, based on the book Predictably Irrational by Dan Ariely. "Professor Ariely describes some experiments which demonstrated something he calls 'arbitrary coherence.' Basically it means that once you contemplate a decision or actually make a decision, it will heavily influence your subsequent decisions. That's the coherence part. Your brain will try to keep your decisions consistent with previous decisions you have made. I've read about that many times before, but what was surprising in this book was the the 'arbitrary' part. ... [In an experiment] the fact that the students contemplated a decision at a completely arbitrary price, the last two digits of their social security number, very heavily influenced what they were willing to pay for the product. The students denied that the anchor influenced them, but the data shows something totally different. Correlations ranged from 0.33 to 0.52. Those are extremely significant."

13 of 244 comments (clear)

  1. Not sure by Anonymous Coward · · Score: 2, Funny

    I think Im 50 / 50 on this one

    1. Re:Not sure by node+3 · · Score: 2, Funny

      Aha! We now have the last two digits of your social security number...

      Question. If you were to represent your odds of agreeing with this study as a *nine* digit number, what would it be?

  2. So by MyLongNickName · · Score: 4, Funny

    Will it help me to understand why I read Slashdot instead of doing something productive with my time?

    --
    See my journal for slashdot ID's by year. Mine created in 2005. http://slashdot.org/journal/289875/slashdot-ids-by-year
    1. Re:So by spun · · Score: 5, Funny

      Yes. You arbitrarily decided to read Slashdot one day. In order to maintain internal consistency, your brain had to make it seem like this is a good idea, and continually offers up excuses for reading Slashdot.

      --
      - None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
    2. Re:So by lwsimon · · Score: 4, Funny

      You probably do it too much, though, as you obviously have never spent any time with a dictionary. If you did, you would realize that you just stated that certain shows show intent to physically harm your brain.

      Please use the word "literally" literally in the future.

      --
      Learn about Photography Basics.
    3. Re:So by dissy · · Score: 4, Funny

      In order to maintain internal consistency, your brain had to make it seem like this is a good idea, and continually offers up excuses for reading Slashdot.

      Pfft, I don't need excuses. I can stop reading Slashdot any time I want!

    4. Re:So by Anonymous Coward · · Score: 1, Funny

      Teee hee hee.

      My mother in-law just brought her "modem" over to my house because someone at tech support told her that her processor's memory died and needs a new motherboard.

    5. Re:So by Ingcuervo · · Score: 0, Funny

      It is not so hard, I've made that choice 3 times this week!!!!

  3. Re:Yeehaw by Aklyon · · Score: 4, Funny

    define "big words". do you mean closer to "potato" or closer to "superstructure"

    --
    I reserve the right to have a physical object so I can sell it later, and recover my money.
  4. Re:TFA by Wonko+the+Sane · · Score: 2, Funny

    Maybe they were flying a plane.

  5. Windows by SnarfQuest · · Score: 2, Funny

    In other words, a company that installs Windows on its first PC will probably install it on thousands of additions, instead of installing Linux on hundreds.

    --
    Who would win this election: Andrew Weiner vs Andrew Weiner's weiner.
  6. The wife's ends in 99 by threaded · · Score: 3, Funny

    The wife's number ends in 99, which explains everything.

  7. Re:Yard Sales by Monkeedude1212 · · Score: 2, Funny

    I do. And when they start to explain why it costs $30,000 more then my offer I go "Well why didn't you say it costs $30,001 in the first place?"