This document discusses major barriers to effective communication, including filtering, selective perception, emotions, language, distrust, and noise. Filtering refers to a sender manipulating information to appear more favorable, which is more likely with more organizational levels. Selective perception means receivers see things based on their biases. Emotions can influence message interpretation. Language barriers occur when words mean different things to sender and receiver. Distrust of the sender can undermine credibility. And noise is any external interference that disrupts the communication process.