2Pin quart M, Sorensen S. Gender differences in self- concept and psychological well - being in old age: a meta- analysis. Journal of Gerontology Series B - Psychological Sciences and Social Sciences, 2001,56(4) : 195 - 213.
3Cohen J. Statistical power analysis for the behavioral sciences. San Diego, CA: Academic Press, 1977.20-22.
4Mckennell A C. Cognition and affect in perceptions of Well- being. Social Indicators Research, 1978,5(1 - 4) : 389 - 426.
5Jorgensen B S, Jamieson R D, Martin J F. Income, sense of community and subjective well- being: combining economic and psychological variables. Journal of Economic Psychology, 2010, 31(4): 612-623.
