This paper offers a model of individual well-being that takes into account cognitive factors. It postulates that individuals compare payoffs to aspiration levels. The latter are determined by past experiences (adaptation), by other people's performance (interpersonal comparison), as well as by reasoning (justifications and excuses). We axiomatize a measure of well-being defined on real-valued vectors of various lengths. It is a linear combination of differences between payoffs and aspiration levels, where the aspiration level at each instance is a linear function of past payoffs.
KeywordsLinear Combination Linear Function Past Experience Cognitive Model Cognitive Factor
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