Answer: Yerkes-Dodson law.
Step-by-step explanation:
The Yerkes – Dodson Law was originally proposed by Robert Yerkes and John Dillingham Dodson in 1908.
They discovered a direct relationship between performance and arousal. Up to a certain point, performance improves with physiological arousal, because it boosts concentration and motivation, but when arousal becomes too much, performance levels go down.