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Brain Teasers - Stroop Test and Stroop Effect

Written by Kelly Choo | 23 September 2018

 

Friday Brain Teasers: How Quickly Can You Process Two Different Streams of Information?

BRAIN TEASERS: THE MECHANICS

Prepare to time yourself, or have a friend time you, using a watch or a timer with a second hand. This is one of the best brain teasers out there, so get ready!

Stoop Test A

Read out loud the words – disregard the colors themselves:

How long did that take?

Stoop Test B

Read out loud the colors of the words – disregard the words themselves:

How long did that take?

 

 

Noticeably, it took considerably longer to read the colors in Test B, didn’t it?

Brain Teasers like this is known as the Stroop effect, named for American psychologist John Ridley Stroop, who made it famous in 1935. Recognizing colors and reading words at the same time, and then resolving the conflict between their meanings, creates a kind of mental interference that slows a person’s processing time. Furthermore, the more you can focus on just one stream of information, the faster the result.

Want to know how you stack up?

Let us see the results of three experiments: Now, let us see the results of three experiments:

    1. The average 16-year-old completed Test A in about 10 seconds and Test B in about 20 seconds.
    2. Meanwhile, the average 20-year-old completed Test A in about 12 seconds and Test B in about 24 seconds.
    3. Lastly, the average 40-year-old completed Test A in about 14 seconds and Test B in about 39 seconds.

Additionally, times increase with age, particularly for Test B. Additionally, times increase with age, particularly for Test B.

 

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