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. Author manuscript; available in PMC: 2017 Sep 1.
Published in final edited form as: J Happiness Stud. 2016 May 23;18(4):993–1011. doi: 10.1007/s10902-016-9756-7

Figure 1.

Figure 1

Development of self-reported happiness throughout time

Notes: “never”, “sometimes” and “often” represent the three categories of the variable happiness