In recent years, several authors have reconstructed the relationship between 20 th century economic theory and neuro-psychological research in terms of a threestage narrative of initial unity, increasing separation and ongoing reunification. In this article, I draw on major developments in economic theory and neuropsychological research to provide a descriptive and normative critique of this reconstruction. Moreover, I put forward a reconstruction of the relationship between economics and neuro-psychology that, I claim, better fits both the available empirical evidence and the methodological foundations of these disciplines. In doing so, I argue that recent calls to develop a unified interdisciplinary framework for modelling choice are premised on disputable presuppositions concerning both the domain of economic theory and the relationship between this theory's axiomatic foundations and empirical findings about the neuro-psychological substrates of choice.Keywords: Economic Theory; Psychology; Interdisciplinary Unification; Rational Choice; Neuroeconomics.
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IntroductionThe philosophical and methodological literature on the relationship between 20 th century economic theory and neuro-psychological research has grown remarkably during the last three decades (see e.g. Earl, 1990, Giocoli, 2003, Hands, 2010, and Hausman, 1992. Several authors (e.g. Bruni and Sugden, 2007, Camerer and Loewenstein, 2004, and Lewin, 1996 have reconstructed this relationship in terms of the following three-stage narrative (henceforth, the 'standard view'). First, we find an early period of unity, going approximately from the marginal revolution in the 1870s to the 1910s, during which neoclassical economic theory was grounded on psychological foundations. Second, there is a phase of increasing separation, prompted by developments in ordinal utility theory and revealed preference theory, culminated in the 1950s with the elimination of psychological findings, constructs and methods from mainstream economic theory. Finally, the systematic violations of mainstream economic theory documented since the 1950s fostered an ongoing reunification between economics and neuro-psychology, which builds on advances in behavioural, experimental and neuroeconomics to provide a unified interdisciplinary framework for modelling choice. The idea is that economists and neuropsychologists can and should draw on a common set of findings, constructs and methods to model choice (see e.g. Gintis, 2004, Glimcher and Rustichini, 2004, Lewin, 1996, and Rabin, 1998.In this article, I draw on major developments in economic theory and neuropsychological research to provide a descriptive and normative critique of this standard view. Moreover, I put forward a reconstruction of the relationship between economics and neuro-psychology that, I claim, better fits both the available empirical evidence and the methodological foundations of these disciplines. I shall argue for three claims of general interest to the philosophers and the practitioners of ...