Researchers asked participants in the PROTECT study, the largest online cohort in older adults, to report how frequently they engage In word and number puzzles and undertake a series of cognitive tests sensitive to measuring changes in brain function. They found that the more regularly participants engaged with the puzzles, the better they performed on tasks assessing attention, reasoning and memory.
The improvements are particularly clear in the speed and accuracy of their performance. In some areas the improvement was quite dramatic—on measures of problem-solving, people who regularly do these puzzles performed equivalent to an average of eight years younger compared to those who don't.
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