sadness remains stable over most of adulthood and begins to increase in old age. In addition, the effects of age on happiness … were investigated; the cross-sectional evidence speaks for a steady decrease in happiness across age groups, but within …-person decline in happiness was only evident in old age. Together the findings provide further evidence for multidirectional age …

We explore the idea that happiness and psychological well-being are U-shaped in age. The main difficulty with this …