New research examining long-term trends in happiness in the U.S., has revealed a pattern that doesn’t fit with conventional wisdom on age and happiness. Past research has found that people grow steadily happier as they age from adolescence to older adulthood, with happiness peaking when people reach their 60s and 70s; the moodiness of youth subsides, and maturity brings more contentment. But the recent study found that this was no longer true: In the last five years, the once-reliable correlation between age and happiness among adults has vanished. Adults 30 and over are less happy than they used to be, while, teens and young adults are happier; in fact, adults over 30 are no longer happier than their younger counterparts. It seems that mature adults’ happiness has waned, while young people’s happiness has flourished.