## Posts Tagged ‘water lilies’

### Cognitive Reflection Test (CRT) and Simple Logic

Posted on: October 30, 2014

Cognitive Reflection Test (CRT) and Simple Logic

A sample of CRT questions:

1. In a textile factory, 5 machines take 5 minutes to make 5 shirts. How long will it take 100 machines to produce 100 shirts?

2. A Ping-Pong paddle and a plastic ball cost \$1.10. If the paddle cost \$1 more, how much is the ball to cost?

3. A pond is growing water lilies. The lilies growth covers double the area they take up each day. If it takes 48 days to completely cover the pond, how many days will it take for the pond to be half covered?

Apparently, the answer to question #1 is 5 minutes, to question 2 is 5 cents and to question 3 is 47 days.

Except for question 3 that is a pure mathematical exponential power growth, questions 1 and 2 leave a lot to be desired in matter of detailed queries in order to properly “correctly” answer the riddle.

Questions need to be previously tested for comprehension and be properly framed.

Looks like you have to learn to figure out what the person wanted to ask you.

In my opinion, if we are measuring “reflection moments“, as opposed to intuitive and quick reactions, any option that demonstrated a reflection should be considered as correct, regardless of that the tester believe is the proper answer.

If the grading gives at least half a point out of one point for any option that can be accepted as a penchant for “reflection”. then the score would have even out level of education, IQ level and many other mental measure that are not highly correlated with intuitive reactions.

It seems that people with high CRT scores:

1. prefer to gamble and opt for riskier choices

2. They are able to control their impulses

3. They are more able to turn down instant gratification

4. Are often atheist

5. Convictions have been reinforced over the years

Apparently, low scorers on CRT have had divine experiences and believe in the immortality of the soul…

Thinking is far more exhausting than sensing. And intuitive people tend to scrutinize less.

Not what seems plausible is necessarily true.

Now suppose your speed from A to b is 100 kmh and from B to A is 50 kmh. What is your average speed?

Average has no meaning in this case.

Averages take into account many repeated driving at a wide range of conditions and situations, such as the bad condition of the lane going back, the night vision difficulties, the inebriation condition, the exhaustion….

Are you slave to emotions? This is represented by the affect heuristics

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