Our thinking devices – imitation, mind-reading, language and others – are neither hard-wired nor designed by genetic evolution. ..Children are masters of imitation. Copying parents and other adults is how they learn about their social world – about the facial expressions and body movements that allow them to communicate, gain approval and avoid rejection. Imitation has such a powerful influence on development, for good and ill, that child-protection agencies across the world run campaigns reminding parents to be role models. If you don’t want your kids to scream at other children, don’t scream at them.