A recent study has shown that people are less happy at age 18 years than in their mid-40s; this is contrary to the thought of mid-life crisis earlier held.
The longitudinal study was done over long period and involved two groups which were followed for the period: Canadian high school seniors from 18 to 43 years and university students from 23 to 37 years. The research showed that happiness increased from 18 to about 43 years then dipped slightly. Earlier studies were cross-sectional.
The study was done by a team at the University of Alberta, Canada and published in the Journal of Developmental Psychology.