1) Listening is an active skill that involves selecting and interpreting auditory clues to identify what is happening and being expressed. 2) Effective listeners monitor their comprehension, associate new information with background knowledge, make inferences about unknown words, and get the main idea rather than listening word-for-word. 3) Factors that can interfere with listening comprehension include unfamiliar vocabulary, grammar, topics that are too long, complex, or uninteresting, as well as unfamiliar accents or speeds of speech.