Every Sunday, NPR host Will Shortz, The New York Times' crossword puzzle guru, gets to quiz thousands of listeners in a long-running segment called the Sunday Puzzle. While written to be solvable ...

Ask yourself these questions if you want to truly test your intelligence—science says they're better than IQ tests.

In my view, one of the most vexing of all types of questions used on IQ tests is the one that asks us to complete an analogical formula such as the following one: Bird is to flying as human is to... I ...

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