Anke C. Plagnol. "Subjective well-being over the life course: Conceptualizations and evaluations". Social Research: An International Quarterly. 77(2), pp. 749-768 (Summer 2010). http://www.jstor.org/stable/40972236 (journal)(open access)
Excerpt: How does subjective well-being change over the life course and what concepts do people draw upon when they answer questions about their well-being? Does well-being indeed change or are people endowed with a set level of happiness around which their well-being fluctuates? These are some of the questions this paper will address with a focus on three domains of life: family, work, and health.