EPTBat = 1
Ball = .1
Bat + Ball = 1+.1 = 1.1 check!
Bat = Ball +1
=> 1 =/= .1 +1 contradiction
OHHHHH The power of math
Smarter people more prone to cognitive bias - Page 2
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MountainDewJunkie
United States10346 Posts
Bat = 1 Ball = .1 Bat + Ball = 1+.1 = 1.1 check! Bat = Ball +1 => 1 =/= .1 +1 contradiction OHHHHH The power of math | ||
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HaNdFisH
Australia119 Posts
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Daniel C
Hong Kong1606 Posts
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Probe1
United States17920 Posts
I did not edit my original post because I got the answer wrong. I didn't even realize I was wrong until I read the correct answers later on. I edited out my answer to the giant bold question because I realized that if people started answering it, it would produce a thread identical to the one you have here. Congratulations, you've opened a riddle thread couched in a research study that no one in the thread will read. | ||
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Defacer
Canada5052 Posts
On June 13 2012 13:27 Ecrilon wrote: Well clearly none of the degrees attached to their names were math degrees. Some people go their entire lives without advancing far beyond a middle school understanding of math, even if their other areas are exceptionally strong. Now watch this cleverness: A bat and ball cost a dollar and ten cents. The bat costs a dollar, more than the ball. How much does the ball cost? Suddenly the ball costs 10 cents instead of 5 cents. ****ing commas man. How do they work. This is the kind of math problem I probably would have gotten right 15 years ago when all my high school math tests were like this. | ||
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wongfeihung
United States763 Posts
On June 13 2012 13:27 MountainDewJunkie wrote: But wait: suppose: Bat = 1 Ball = .1 Bat + Ball = 1+.1 = 1.1 check! Bat = Ball +1 => 1 =/= .1 +1 contradiction OHHHHH The power of math I hope this was intended to be a joke. | ||
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Nothingtosay
United States875 Posts
+ Show Spoiler + X(ball)+Y(Bat)=110 X+(X+100[a dollar]) = 110 2x +100= 110 2x= 10 x= 5 Ball 5 cents bat 105 cents | ||
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2WeaK
Canada550 Posts
The bat and ball question, I read $1.10, then $1 for the bat so I ignored the $1 and just went 10/2 and $1.05 for the bat. I didn't hesitate. | ||
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valheru
Australia966 Posts
Lily pad similar thing nothing popped into my head at first just a delay then the answer. | ||
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Sinensis
United States2513 Posts
Well that's convenient. EDIT I'd just like to add that I didn't get the answer wrong, as no one intelligent should have. The truly intelligent person just scolls down the page a little first. | ||
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besteady
United States75 Posts
E: is this a trick to try to get us to give the wrong answer by telling us how over examining can give us errors? | ||
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WarSame
Canada1950 Posts
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Defacer
Canada5052 Posts
On June 13 2012 13:28 HaNdFisH wrote: I wonder if there is any correlation with discipline here, would for instance a mathematics or physics major be less prone to these type of errors than an arts/psychology/etc major? Honestly, I think it has more to do with 'priming' and familiarity with a certain kind of problem, more than it has to do with a specific discipline. For example, I'm sure an English major would struggle with Scrabble or a Crossword if they never played/solved one before. I guess I'm saying I want a second chance to redeem myself LOL.  | ||
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-_-Quails
Australia796 Posts
The lilypad problem is a result of people latching onto the words 'half' and 48, missing out on the context of half. Changing that is simply a matter of practice - the more often you deal with rates of change, the less likely you are to make this error. It seems reasonable to me that there is an increase in the number of shortcuts taken as people become smart enough to spot more shortcuts. It also seems reasonable that those shortcuts applied incorrectly lead to error. But it strikes me as odd that there would not be an upper limit beyond which biases decrease as misapplications decrease in frequency, and that someone can be intelligent enough to understand that they are biased yet be unable to change it. | ||
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Muirhead
United States556 Posts
What do these basic trick math questions have to do with "cognitive bias" anyways. | ||
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Smat
United States301 Posts
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GenesisX
Canada4267 Posts
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GGTeMpLaR
United States7226 Posts
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Sinensis
United States2513 Posts
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HaNdFisH
Australia119 Posts
Method Participants. The participants were 482 undergraduate students (122 men, 360 women) from a medium-sized, eastern university recruited through an introductory psychology subject pool. | ||
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