Subjective well being (SWB) refers to an evaluation of an individual's life from his or her own perspective. It contrasts sharply with evaluations made from the point of view of external observers (researchers or policymakers), which are based on objective criteria related to health, education, income or other aspects (Diener, 2006). Recently, prominent SWB researchers have argued forcefully in favour of supplementing traditional objective indicators of well being or quality of life (such as economic indicators) with indicators of SWB (thus, people's evaluations and feelings about their lives). This should provide the public and politicians with more complete and relevant information for public discussion and political decision-making (see Diener, Kesebir and Lucas, 2008). In our opinion, these arguments apply with equal measure to the quality of life and SWB of older adults. The following list is an overview of policy questions about these issues. The list comprises five sets of questions that will in part be answered in later sections of the chapter: The next section presents some answers to the policy questions on the basis of existing research, and highlights where further research is needed to give satisfactory answers.
Major progress in understandingThis section is comprised of five subsections: the first three provide a conceptual clarification of the term SWB, followed by a discussion of measurement issues. Subsequently, weRegulation of Subjective Well being in Older Adults 4 highlight the structure of SWB and the theoretical status of the concept in causal networks.On the basis of these explanations, the fourth subsection presents the main findings on the developmental course, on the causes and consequences of SWB in older adults and on what relevant interventions might involve. This is followed by a fifth subsection discussing models of SWB regulation in older adults.
Conceptual clarification and measurement issuesAs mentioned above, SWB refers to an evaluation of an individual's life from his or her own perspective, which contrasts with evaluations made from the point of view of external observers (including researchers and policymakers), which are based on objective criteria.Leading researchers agree that SWB has a cognitive component (namely, the evaluation of one's life) and an affective component (namely, the presence of positive-and absence of negative feelings) (Diener, 2006). This consensus is also shared by prominent researchers of SWB in late life (Diener and Suh, 1998;Ferring et al., 2004;Pinquart and Sörensen, 2000;Staudinger, 2000 Clark and Tellegen, 1988). Table 1 provides a classification of the SWB measures. Even though SWB has a cognitive and an affective component, the measurement in many existing studies has focused on just one of them-that is, life satisfaction (often global life satisfaction assessed by just one item) or positive/negative affect. A domain-specific measure of positive or negative affect has-to the best of our knowledge-not been realised yet, and this represents an ...