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Beautiful Minds

Working Memory and Fluid Reasoning: Same or Different?

Brainy woman

In 1990, researchers Patrick Kyllonen and Raymond Christal found a striking correlation. They gave large groups of American Air Force recruits various tests of working memory, in which participants performed simple operations on a single letter. For instance, in the “alphabet recoding” task, the computer briefly displayed three letters: H, N, C Followed by an [...]

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