Sources of Uncertainty and Subjective Prices

Veronica Cappelli, Simone Cerreia-Vioglio, Fabio Maccheroni, Massimo Marinacci, Stefania Minardi

We develop a general framework to study source-dependent preferences in economic contexts. We behaviorally identify two key features. First, we drop the assumption of uniform uncertainty attitudes and allow forsource-dependent attitudes. Second, we introduce subjective pricesto compare outcomes across different sources. Our model evaluates proles source-wise, by computing the source-dependent certainty equivalents; the latter are converted into the unit of account of a common source and then aggregated into a unique evaluation. By viewing time and location as instances of sources, we show that subjective discount factors and subjective exchange rates are emblematic examples of subjective prices. Finally, we use the model to explore the implications on optimal portfolio allocations and home bias. (JEL: D11, D81)

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