A Theory of Subjective Well-Being
Date
2021
Authors
Fabian, Mark
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I argue that subjective well-being scholarship (SWB) has opened valuable new vistas in wellbeing research over the past four decades or so. However, owing to its operationalist epistemology, it cannot effectively advance into areas it now wants to influence, notably welfare economics and public policy. It must first adopt a more realist epistemology, which begins with a deep theory of wellbeing, including its causal structure. I provide this theory - the production function model of wellbeing - drawing on ideas in clinical, hedonic, moral, behavioural and developmental psychology, and both analytical and continental philosophy. The individual components of this theory have empirical backing, but the model of wellbeing that it gives rise to produces some inferences that are not verified by subjective well-being data. In particular, the model would suggest that people can experience sustained improvements in subjective wellbeing over the life course, but this is rarely what we see in life satisfaction data in advanced nations. This discrepancy motivates an investigation in the final chapters as to whether life satisfaction measures might suffer from issues of scale norming driven by ceiling effects. This would explain the discrepancy between the model's inferences and what we see in the data. I provide theoretical arguments and empirical evidence from a novel life satisfaction plotting metric that lends credence to this hypothesis. This leads me to argue that the field should experiment with alternate metrics for measuring life satisfaction and evaluated wellbeing more generally. I discuss some possible options.
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