Faulty logic arises from fast thinking - slow down

The Cognitive Reflection Test (CRT), developed by professor Shane Frederick, goes as follows:

1. A ping-pong paddle and plastic ball cost $\mathrm{1.10.}Ifthepaddlecosts$1 more, how much is the ball?
   • The ball is $0.05andthepaddleis$1.05.
2. In a factory, five machines take exactly five minutes to make five shirts. How many minutes will it take one hundred machines to produce one hundred shirts?
   • 5 minutes.
3. A pond has water lilies growing in it. The flowers double the area they take up each day. If it takes 48 days for the pond to be completely covered, how many days will it take for half to be covered?
   • 47.

Students who scored highly are able to control their impulses to rely on intuitive thinking, overcoming the seductive power of instant gratification.