Thursday, February 03, 2011

Question of the day: Which of two alternatives is more probable?

Linda is 31 years old, single, outspoken, and very bright. She majored in philosophy. As a student she was deeply concerned with issues of discrimination and social justice and also participated in anti-nuclear demonstrations.

Which of two alternatives is more probable:

A. Linda is a bank teller.

B. Linda is a bank teller and is active in the feminist movement.

The vast majority of U.S. college students who were given this question picked B, thus scoring an F for logical thinking.

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