Psychologists compare it to the aggression displayed by angry drivers.
The challenge for parents is to promote a recreational atmosphere for their kids that is fun and educational. Be positive, don't criticize, and never disagree with the coach or referees in front of your child. When your team wins, or when your team loses, or when your child doesn't play well, or when your child does play well, be positive and provide encouragement. There are the things the child will and should remember. Please submit requests for further information about products or services directly to the specific company.