“The overall message, unfortunately for parents, is you have another task,” says Harold Koplewicz, a psychiatrist and the president of the Child Mind Institute in New York City. “Not only are you working. Not only have you been assistant teacher. Not only have you been a playmate, but you are now Santa’s Helper—and unless you’re Santa’s Helper, you will make Christmas or Hanukkah or whatever the holiday season is a little less than it needs to be.”