Researchers tested participants for their cognitive abilities by administering standardized tests of memory, information processing, and thought organization.

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Rehab doctors will give Giffords a series of tests to assess her physical and cognitive abilities, he said.

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Dr. Gow said previous research with the Lothian group suggested people who participated in more social and intellectual activities at age 70 and had better cognitive abilities were the ones who scored higher on mental ability tests at age 11.

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