Ｑ54.What is irritation?

Ａ.Irritation is a feeling when we expect something frustrating.

　　Irritation or impatience is felt when we can't remember the answer to a question on a test but time is almost up, or we are not making progress on studying for an upcoming test. Irritation occurs due to expecting frustration.
　　If people feel irritation, they become unpleasant, extremely tense, and excited.
　　Irritation is different from dissatisfaction in that the actions are only directed to one's self.
　　Excessive tension from irritation often makes people respond wrongly, therefore irritation has little value in evolution. Having muscles tensed for fighting is especially useless during an exam.
　　Irritation is unpleasant so it encourages preparation to avoid it, which is the only positive effect.