We have known it for years. Non-verbal communication is a powerful tool to share our emotions. World wide a frown signifies anger and a smile happiness. The master psychologist Eric Berne years ago called a stroke as the smallest unit of recognition and told us about the power of positive strokes. Also how negative strokes, on the contrary, can go so far as to mar the growth of a growing infant. Young children thrive on positive strokes and it is up to us to give them in plenty for good work done.