tell tale signs that inform you . . . .

To introduce ourselves, try look the other person in the eyes. All behaviour writings inform us , this is best we can see by someone's facial expressions how they are reacting. There this `unconscious socialization abilities` that written about by Rogers . .  person centered approaches...Stephenson, The Couch trip .., Bernie `I`m OK your OK etc.. You can pick up the cues. Face to Face is best way to communicate.

Little tell tale signs that inform you, how you're being understood.

Not sure l agree but someone more clever then l..said 20 seconds is the time we form view on someone.  Make sure you are paying attention to them — and not to you. 

It is very difficult elderly people to change their attitudes, actions, and lives. 

We must all do our utmost to disagree in a manner which shows the love of Jesus Christ to every person we encounter, especially those with whom we disagree.

OK to argue, important to debate. Wise to discuss, have coffee and chat 

Listen, listen with all your body.Reflect write stuff down.