Economics rests upon a set of presumptions about how human beings are affected by income. Yet causal evidence is scant. This paper reports a longitudinal study of randomly selected lottery winners. Remarkably, we show that it takes almost three years before they enjoy their money. We develop a...

Economics ignores the possibility of hedonic adaptation (the idea that people bounce back from utility shocks). This paper argues that economists are wrong to do so. It provides longitudinal evidence that individuals who become disabled go on to exhibit recovery in mental wellbeing. Adaptation...