Which principle describes the relationship between arousal and performance?

• A. Linear relationship
• B. Threshold model
• C. Inverted U Principle
• D. S-curve concept

Answer: (C)

Arousal and performance follow an inverted U pattern, meaning performance rises with arousal up to an optimal point and then falls as arousal becomes too high. With too little arousal, attention and energy are low, so performance is sluggish. As arousal increases, alertness, motivation, and focus improve, boosting performance. But beyond the optimal level, too much arousal brings anxiety, muscle tension, and distractibility, which disrupt precision and steady execution.

Task difficulty matters: simple, well-practiced tasks tend to peak at higher arousal, while complex or novel tasks peak at lower arousal because they require calmer, more controlled focus.

This model best captures the peak-and-decline pattern. A linear relationship would incorrectly suggest continuous improvement with more arousal, and other models like a threshold or S-curve don’t describe the visible rise to a peak and subsequent drop in performance.