I spotted this in Edward de Bono’s Thinking Course book:
Very few people are good listeners. A good listener listens slowly to what is being said. He does not jump ahead nor does he rush to judge nor does he sit there formulating his own reply. He focuses directly on what is being said. He listens to more than is being said. He extracts the maximum information from what he hears by looking between the words used and wondering why something has been expressed in a particular way. It is active listening because the listener’s imagination is full of ‘could be’ and ‘may be’ elaborations.
From this it’s clear why few people are good listeners, it’s quite an art.
Listening better to yourself: here.
Listening better to others (a missed opportunity): here.