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Working Paper
Income Volatility and Portfolio Choices
Based on administrative data from Statistics Norway, we find economically significant shifts in households' financial portfolios around structural breaks in income volatility. When the standard deviation of labor-income growth doubles, the share of risky assets decreases by 4 percentage points. We ask whether this estimated marginal effect is consistent with a standard model of portfolio choice with idiosyncratic volatility shocks. The standard model generates a much more aggressive portfolio response than we see in the data. We show that Bayesian learning about the underlying volatility ...
Working Paper
Learning Monetary Policy Strategies at the Effective Lower Bound with Sudden Surprises
Central banks around the world have revised their operating frameworks in an attempt to counter the challenges presented by the effective lower bound (ELB) on policy rates. We examine how private sector agents might learn such a new regime and the effect of future shocks on that process. In our model agents use Bayesian updating to learn the parameters of an asymmetric average inflation targeting rule that is adopted while at the ELB. Little can be discovered until the economy improves enough that rates would be near liftoff under the old policy regime; learning then proceeds until either the ...
Working Paper
Credit Scores and Inequality across the Life Cycle
Credit scores are a primary screening device for the allocation of credit, housing, and sometimes even employment. In the data, credit scores grow and fan out with age; at the same time, income and consumption inequality also increase with a cohort’s age. We postulate a simple model with hidden information to explore the joint determination of credit scores, income, and consumption over an individual’s lifetime which can replicate these empirical facts. We use the model to understand the role of technologies like big data or legal restrictions limiting information on certain adverse ...