A simple, yet essential communication skill : Validation

To validate someone's feelings is first to accept someone's feelings. Next, it is to understand them, and finally it is to nurture them.

To validate is to acknowledge and accept one's unique identity and individuality.

Invalidation, on the other hand, is to reject, ignore, or judge their feelings, and hence, their individual identity.

When we validate someone, we allow them to safely share their feelings and thoughts. We are reassuring them that it is okay to have the feelings they have. We are demonstrating that we will still accept them after they have shared their feelings. We let them know that we respect their perception of things at that moment. We help them feel heard, acknowledged, understood and accepted.

Sometimes validation entails listening, sometimes it is a nod or a sign of agreement or understanding, sometimes it can be a hug or a gentle touch. Sometimes it means being patient when the other person is not ready to talk.
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Validation allows a person to release their feelings in a healthy, safe and supportive way. It also helps us get to know them better. Thus it builds bonds of caring, support, acceptance, understanding and trust. When a person is feeling down, these bonds are sometimes all that another person needs to begin to feel better and solve their own problems.
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By validating someone we demonstrate that we care and that their feelings matter to us-- in other words, that they matter to us. By "mirroring" someone's feelings, we show them that we are in tune with them. We feel connected with them and they feel connected with us.

taken from: http://eqi.org/valid.htm