Listening is an important communication skill that involves receiving, interpreting, and reacting to messages. There are different types of listening including discriminative, comprehensive, evaluative/critical, biased, and superficial/casual listening. Discriminative listening identifies differences in sound, comprehensive listening aims to understand the full meaning, and evaluative listening involves making judgements about what is said. Biased listening only hears what the listener wants to hear. Superficial listening pays no attention to the content. Effective listening is an art that acknowledges the importance of the speaker.