When it comes to "listening," we think of "hearing," which is only part of effective listening. Hearing is one of the five human senses. It occurs when a sound is transmitted to your eardrum and is delivered to the brain for interpretation. We hear many things that have little to do with communicating. Many sounds do not cause a conscious response. Our mind filters out many sounds and yet processes many others. Everyone's effective hearing is at different levels.
Listening is hearing with your ear, your mind and how you feel about what you have heard. The problem with most of us is that we don't pay attention or focus on speakers when they are talking. We hear what they are saying with our ears, but are not listening with our minds. We hear words, but really do not comprehend what was said, nor do we care what was said. Much is missed in the total communication process.