The next time some twenty-something complains that they feel old, you can reassure them that their feelings are, in fact, not ridiculous. After studying 3,305 people ages 16 to 44, researchers found that the brain’s response time begins to decline at age 24. The descent is a slow, but nonetheless, steady one. Researchers observed study participants’ reaction times as they played the video game StarCraft 2, and analyzed the speed at which they made “game-time” decisions to save their virtual lives. The findings shouldn’t completely devastate you. The study also found that older participants compensated for their shortage of speed with strategy and efficiency. 1. Svennerholm L, Boström K, Jungbjer B. Changes in weight and compositions of major membrane components of human brain during the span of adult human life of Swedes. Acta Neuropathol 199794345–352. [PubMed] [Google Scholar] 2. 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Which mental change is associated with aging?The most common mental and neurological disorders in this age group are dementia and depression, which affect approximately 5% and 7% of the world's older population, respectively.
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What is the primary reason why peoples reaction times slow down as they get older?
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