How Rational Are You?
Have you ever taken an IQ test? Well, here's the rationality equivalent. Take a crack at some of the questions that are part of the Comprehensive Assessment of Rational Thinking, also known as the CART test.
We hope you do better than some of the Innovation Hub producers did.
Note: Some of these questions have been edited from their original form for length and clarity. To learn more about CART visit
innovationhub.org
.
* Required
1. Fresh or Frozen Strawberries
Assume your job is to make sure boxes of strawberries have been stacked properly. When you check the stacks you're making sure that no box of fresh strawberries is touching any box of frozen strawberries.
Today, you find a stack of three boxes of strawberries, where the top box contains fresh strawberries and the bottom box contains frozen strawberries. However, the middle box of strawberries has no label, and thus, contains either fresh or frozen strawberries. Is a box of fresh strawberries touching a box of frozen strawberries?
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1 point
Yes
No
Not enough information
2. Hitting the Slots
When playing the slot machines, people win something about 1 in every 10 times. Nancy, however, has just won on her first three plays. What are her chances of winning the next time she plays?
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1 point
She has a better than 1 chance in 10 of winning on her next play.
She has less than 1 chance in 10 of winning on her next play.
She has a 1 chance in 10 that she will win on her next play.
3. Teen Smoking
Researchers have found that teenagers who smoke cigarettes tend to have lower IQ scores than teenagers who do not smoke cigarettes. This finding means that preventing teenagers from smoking would tend to raise their IQ scores:
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1 point
Yes
No
No way to know
Instructions: In questions 4 and 5, you will be given two premises which you must assume are true. You must decide whether the conclusion necessarily follows logically from the premises. It is important that you assume the premises to be true and ignore whether the conclusion is factually correct. Rate the conclusions only in terms of whether it necessarily follows.
4. A Tulip By Any Other Name
Premise 1: All flowers are carbitops. Premise 2: All tulips are carbitops. Conclusion: All tulips are flowers.
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1 point
Conclusion necessarily follows from premises
Conclusion does not necessarily follow from premises
5. Rock On
Premise 1: All nuts are bictodes. Premise 2: No rocks are bictodes. Conclusion: No rocks are nuts .
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1 point
Conclusion necessarily follows from premises.
Conclusion does not necessarily follow from premises.
6. Which Textbook is Better?
Professor Kellan needs to select a textbook for a new course. She has narrowed her decision down to one of two textbooks: one published by Pearson and the other published by McGraw. Kellan belongs to several professional web-based forums that share information about curricular issues. Each of the forums has a textbook evaluation section, and the websites unanimously rated the McGraw textbook as the better choice in every category.
Just before Professor Kellan is about to place the order for the McGraw book, however, she asks an experienced colleague for her opinion. Her colleague reports that she prefers the Pearson book over the McGraw book. What should Professor Kellan do?
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1 point
She should definitely use the Pearson textbook
She should probably use the Pearson textbook
She should probably use the McGraw textbook
She should definitely use the McGraw textbook
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