Final answer:
The statement that some amount of arousal can be good for performance is true. The Yerkes-Dodson law describes how moderate arousal offers an optimal condition for peak performance, which varies based on the complexity of the task. However, sustained high arousal can have adverse health effects.
Step-by-step explanation:
Some amount of arousal can indeed be good for performance; the statement is true. This concept is famously represented by the Yerkes-Dodson law, which posits that there is an optimal level of arousal for peak performance. Moderately high arousal can enhance certain aspects of performance, such as concentration and recall in educational contexts or energy and focus in athletic competitions
The law indicates that performance can suffer both under very low arousal conditions, such as boredom, and very high arousal conditions, like extreme anxiety. However, the optimal arousal level is not a one-size-fits-all and varies depending on the task's complexity. Simple tasks may be performed better under higher levels of arousal, while complex tasks might require lower levels of arousal to be performed well.
Arousal can sometimes act as a positive, motivating force, also known as eustress, which is associated with positive feelings and optimal performance. For example, a moderate amount of stress can help athletes before a game or students before an exam. Nonetheless, it is important to recognize that sustained long-term stress or arousal is not beneficial and can lead to negative health outcomes.