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A key principle of the Yerkes-Dodson law is that the optimal level of arousal for performance varies with the nature of the task. Simple, well-learned tasks are performed most effectively under relatively high levels of arousal. In contrast, complex or difficult tasks are best performed when arousal levels are lower, as high arousal can interfere with the cognitive processes required for such tasks.

Optimal Arousal Level and Task Complexity

A professional musician is preparing for two performances on the same day. The first is a solo performance of a new, technically demanding piece of music. The second is playing a simple, familiar song as part of a large ensemble. To achieve peak performance in both situations, how should the musician ideally manage their state of alertness or excitement?

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