An examination of emotions reported on 12 million personal blogs along with the results of three experiments reveal that the meaning of happiness is not fixed; instead, it shifts as people age. Whereas younger people are more likely to associate happiness with excitement, older people are more...

An examination of emotions reported on 12 million personal blogs along with a series of surveys and laboratory experiments shows that the meaning of happiness is not fixed; instead, it systematically shifts over the course of one’s lifetime.Whereas younger people are more likely to associate...