Entry:

Veenhoven, Ruut, "Is Happiness Relative?" Social Indicators Research, 24 (February, 1991), 1-34.

Abstract:

People tend to be unhappy under adverse conditions such as poverty, war, and isolation. Improvement or deterioration of at least some conditions affects happiness lastingly. Earlier hardship does not favor later happiness. People are traditionally positive about their lives rather than neutral.

1972-1977

Other Data Sets:

Easterlin, 1974; Veenhoven, 1990