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It depends on the type of task you are doing. As you get older your muscle movement part of reaction time gets slower but your initial reaction time i.e. the brain acknowledging, the visual and deciding what to do is the same as younger individuals.

Reaction time shortens from infancy into the late 20s. Then reaction time slowly increases from 50s and 60s. The Reaction time lengthens faster as the person gets into their 70s.

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βˆ™ 13y ago
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βˆ™ 13y ago

It is because our corpus collosum gets weaker and can divide the two sides of our brain therefore, with age you have less focus on parts of the brain when you need them. A corpus collosum is a part of the brain that either links the two sides or divides them.

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βˆ™ 13y ago

Reaction time itself does not change, but response time does. So nerves work the same, but the movement speed is what differs

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Q: Why does age affect reaction time?
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