Stress and Cognitive Performance
Stress and Cognitive Performance is the study of how feeling nervous or pressured changes how well your brain thinks and remembers.
A tray has twelve small squares, each one a slot for a cup. Four cups leave most slots free, and you carry the tray with ease. Pack all twelve and one wrong step sends cups sliding off. Your brain is that tray — some stress keeps you sharp, but too much leaves no room to think.
Explaining stress and cognitive performance by grade level
Think about standing on a stage in front of a big crowd. Your heart beats fast and your hands feel sweaty. When you feel that nervous, it can be hard to remember things. Stress takes up space in your brain that you need for thinking.
Projects that explore stress and cognitive performance
Feeling nervous or pressured can sharply reduce how well your brain remembers. Under calm conditions, twenty boys and twenty girls each recall about seventeen to eighteen objects on average after viewing a set of twenty-five items for two minutes. When each person is told just before reciting that they are being graded and watched by an assessor, that number drops to fewer than seven. A sudden stressful situation can cut short-term memory by more than half.
Pressure also hurts your brain's ability to recall specific steps in a sequence. When instructions come fast, your brain struggles to store them all. You call out eight physical tasks — things like jumping jacks and running in place — with only a few seconds between each one. At the end, you ask everyone to name the third task. The results show how rapid-fire delivery affects short-term memory and recall.