The Cognitive Reflection Test (CRT) is the world's shortest IQ test, just three questions to separate the Einsteins from the Homer Simpsons of this world.
The test was developed by Shane Frederick in Princeton in 2005 who is a psychologist.This test is designed to test your ability to ignore your gut response and think slower and more rationally. To pass in the CRT, you must spend time reflecting on your answer and question your intuitive response.
Yep, to prove your genius you must get all right but speed also matters.
NOTE: Even students from some world's top universities (including Yale and Harvard) failed to get all three answers correct in a 2003 study. In fact, only 17 percent achieved a perfect score.
The Test
1. A bat and a ball cost $1.10 in total. The bat costs $1 more than the ball. How much does the ball cost?
2. If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?
3. In a lake, there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake?
Scroll down for the answers!
The Answers
1. 5 cents – There's a very good chance you guessed 10 cents. The answer is actually a little less – a 5 cent ball plus a bat costing $1.05 will set you back $1.10. And, of course, $1.05 is exactly $1 more expensive than 5 cents. (A Princeton study found that people who responded 10 cents were "significantly" less patient than those who got the right answer.)
2. 5 minutes – Your gut instinct might be to say 100 minutes. Fortunately, it wouldn't take quite so long. From the question, we can determine it takes exactly 5 minutes for 1 widget machine to make 1 widget. Therefore, it would take 5 minutes to make 100 widgets from 100 widget machines.
3. 47 days – You might have guessed 24 days. It seems intuitive to half the number of days because you're halving the size of the lilypad patch. But if the area of the lake covered in lilypads doubles every day, it would only take one day for it to go from being half covered to fully covered. Take one day away from 48 days and you're left with 47.
1. 5 cents – There's a very good chance you guessed 10 cents. The answer is actually a little less – a 5 cent ball plus a bat costing $1.05 will set you back $1.10. And, of course, $1.05 is exactly $1 more expensive than 5 cents. (A Princeton study found that people who responded 10 cents were "significantly" less patient than those who got the right answer.)
2. 5 minutes – Your gut instinct might be to say 100 minutes. Fortunately, it wouldn't take quite so long. From the question, we can determine it takes exactly 5 minutes for 1 widget machine to make 1 widget. Therefore, it would take 5 minutes to make 100 widgets from 100 widget machines.
3. 47 days – You might have guessed 24 days. It seems intuitive to half the number of days because you're halving the size of the lilypad patch. But if the area of the lake covered in lilypads doubles every day, it would only take one day for it to go from being half covered to fully covered. Take one day away from 48 days and you're left with 47.
 is the world's shortest IQ test, just three questions to separate the Einsteins from the Homer Simps...){kind=link}
Wow! I guessed every answer wrong
ReplyDeleteAdeprince, the first question wasnt hard at all
ReplyDelete