How Stress Affects Thinking

Why pressure makes clear thought harder

Chronic stress floods your brain with cortisol, which can actually reduce volume in the prefrontal cortex, the region you rely on for planning, focus, and decision-making. A little stress sharpens you, but too much does the opposite.

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Under acute stress, your brain shifts resources toward survival circuits and away from higher-order thinking. That's why you blank on someone's name during a high-pressure moment or make impulsive choices when overwhelmed. The good news: stress-reduction techniques like deep breathing can lower cortisol within minutes and help your prefrontal cortex come back online.

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Related Research

Diamond, D. M., Campbell, A. M., Park, C. R., Halonen, J., & Zoladz, P. R. (2007). The temporal dynamics model of emotional memory processing: A synthesis on the neurobiological basis of stress-induced amnesia, flashbulb and traumatic memories, and the Yerkes-Dodson law. Neural Plasticity, 2007, 60803.