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As we get older, our cognitive abilities change, improving when we’re younger and declining as we age. Scientists posit a hierarchical structure within which these abilities are organized. There’s the “lowest” level— measured by specific tests, such as story memory or word memory; the second level, which groups various skills involved in a category of cognitive ability, such as memory, perceptual speed, or reasoning; and finally, the “general,” or G, factor, a sort of statistical aggregate of all the thinking abilities.... More>
When the world’s finest golfers descend this week on Maryland’s Congressional Country Club for the 111th U.S. Open, there will be no hands-down favorite for the crowds to follow. Bubba […]... More>