Simple and Complex Mental Subtraction: Strategy Choice and Speed-of-Processing Differences in Younger and Older Adults

Thirty-six younger adults (10 male, 26 female; ages 18 to 38 years) and 36 older adults (14 male, 22 female; ages 61 to 80 years) completed simple and complex paper-and-pencil subtraction tests and solved a series of simple and complex computer-presented subtraction problems. For the computer task,...

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