The most effective response to bad behavior is to express disappointment. According to independent reviews by Professor Eisenberg and David R. Shaffer, parents raise caring children by expressing disappointment and explaining why the behavior was wrong, how it affected others, and how they can rectify the situation. This enables children to develop standards for judging their actions, feelings of empathy and responsibility for others, and a sense of moral identity, which are conducive to becoming a helpful person. The beauty of expressing disappointment is that it communicates disapproval of the bad behavior, coupled with high expectations and the potential for improvement: “You’re a good person, even if you did a bad thing, and I know you can do better.”

As powerful as it is to criticize bad behavior and praise good character, raising a generous child involves more than waiting for opportunities to react to the actions of our children. As parents, we want to be proactive in communicating our values to our children. Yet many of us do this the wrong way.

In a classic experiment, the psychologist J. Philippe Rushton gave 140 elementary- and middle-school-age children tokens for winning a game, which they could keep entirely or donate some to a child in poverty. They first watched a teacher figure play the game either selfishly or generously, and then preach to them the value of taking, giving or neither. The adult’s influence was significant: Actions spoke louder than words. When the adult behaved selfishly, children followed suit. The words didn’t make much difference — children gave fewer tokens after observing the adult’s selfish actions, regardless of whether the adult verbally advocated selfishness or generosity. When the adult acted generously, students gave the same amount whether generosity was preached or not — they donated 85 percent more than the norm in both cases. When the adult preached selfishness, even after the adult acted generously, the students still gave 49 percent more than the norm. Children learn generosity not by listening to what their role models say, but by observing what they do.