The Happiness Hypothesis: Putting Ancient Wisdom to the Test of Modern Science

by Jonathan Haidt

My underjoyed response to success turns out to be normal. And from an evolutionary point of view, it’s even sensible. Animals get a rush of dopamine, the pleasure neurotransmitter, whenever they do something that advances their evolutionary interests and moves them ahead in the game of life. Food and sex give pleasure, and that pleasure serves as a reinforcer (in behaviorist terms) that motivates later efforts to find food and sex. For humans, however, the game is more complex. People win at the game of life by achieving high status and a good reputation, cultivating friendships, finding the best mate(s), accumulating resources, and rearing their children to be successful at the same game. People have many goals and therefore many sources of pleasure. So you’d think we would receive an enormous and long-lasting shot of dopamine whenever we succeed at an important goal. But here’s the trick with reinforcement: It works best when it comes seconds—not minutes or hours—after the behavior. Just try training your dog to fetch by giving him a big steak ten minutes after each successful retrieval. It can’t be done.