When people are in a certain emotional state, they tend to pay more attention to, or remember, things that are charged with the same emotion; so it is with anger. For instance, if you are trying to persuade someone that a tax increase is necessary, if the person is currently feeling angry you would do better to use an argument that elicits anger ("more criminals will escape justice") than, say, an argument that elicits sadness ("there will be fewer welfare benefits for disabled children"). Also, unlike other negative emotions, which focus attention on all negative events, anger only focuses attention on anger-causing events.