Kathleen Vohs in Reader's Digest

Intelligence is difficult to define—psychologists have been arguing about it for years. According to Cornell professor Robert J. Sternberg, PhD, intelligence is the ability “to learn from experience, adapt to new situations, understand and handle abstract concepts, and use knowledge to manipulate one’s environment.” Skills like perception, learning, memory, reasoning, and problem-solving facilitate these abilities. To that end, certain habits may be evidence you’ve got these skills. For example, you’d think someone who was intelligent would be organized and have everything in their work space arranged neatly—but that’s not the case.

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