Happiness Assessment
The Flourishing Scale is a brief 8-item summary measure of the respondent's self-perceived success in important areas such as relationships, self-esteem, purpose, and optimism. The scale provides a single psychological well-being score!
Diener, E., Wirtz, D., Tov, W., Kim-Prieto, C., Choi, D., Oishi, S., & Diswas-Diener, R. (2009). New measure of well-being: Flourishing and positive and negative feelings. Social Indicators Research, 39, 247-266.