For example: In an interview the interviewee was asked to give one (only one) example of a workshop he would develop to help the organization's clients prepare for employment....after hearing the responses - It became apparent that the interviewee was either not listening or so nervous that they kept rambling off several workshops until the Interviewer had to cut them off.
The interviewing process can be very stressful. Stress can cause our minds to shut down when the interviewer is speaking and cause a mental block when it's time to respond; or it can cause us to keep rambling searching for the right statement only to annoy the interviewer.
Only a few of us are naturally good listeners. And when stress or fear is present it can further interfere with our ability to listen. Likewise, only a few of us naturally have the "gift of gab" or are able to impressively sell ourselves under pressure so practicing can help eliminate the stress of interviewing.
Whether you practice with a friend, practice in a mirror, practice by yourself or practice by going on real interviews for jobs you don't really want - the cliché "practice makes perfect" is a reality. Practicing helps us stay focus and demonstrate to the interviewer that we are prepared, know how to communicate and are great candidates for the current position.