category: UIUX 360

Yerkes-Dodson Law

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Yerkes-Dodson Law

What is Yerkes-Dodson Law?


The Yerkes–Dodson law is a model of the relationship between stress and job performance. It proposes that you reach your peak level of performance with intermediate levels of stress or excitement. Too less or too much arousal results in poor performance.

The Yerkes-Dodson law states that there is a relationship between performance and arousal. Increased arousal can improve performance, but only at a certain point. When arousal becomes excessive, performance declines. It is also known as the inverted-U model of arousal.

When stress gets too high, performance goes down. To add more nuance, the shape of the stress-performance curve varies depending on the complexity and familiarity of the task.

Task performance is best when arousal levels are in the moderate range, with difficult tasks performing best under lower levels of arousal and simple tasks performing best under higher levels of arousal.

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