Knowledge that Transforms

We study daily money market mutual fund flows at the individual share class level during September 2008. This fine granularity of data allows new insights into investor and portfolio holding characteristics conducive to run risk in cash-like asset pools. We find that cross-sectional flow data observed during the week of the Lehman failure are consistent with key implications of a simple model of coordination with incomplete information and strategic complementarities. Similar conclusions follow from daily models fitted to capture dynamic interactions between investors with differing levels of sophistication within the same money fund, holding constant the underlying portfolio.

Using Danish administrative data, we estimate the impact of bequests on the level and inequality of wealth. We compare the distributions of wealth over time of people whose parent died and those whose parent did not. Bequests account for 26 percent of the average post-bequest wealth 1-3 years after parental death and significantly affect wealth throughout the distribution. Bequests increase absolute wealth inequality (variance of the distribution censored at the top/bottom 1% increases by 33 percent), but reduce relative inequality (the top 1% share declines by 6 percentage points from the base of 31 percent).

What determines risk-bearing capacity and the amount of leverage in financial markets? Using unique archival data on collateralized lending, we show that personal experience can affect individual risk-taking and aggregate leverage. When an investor syndicate speculating in Amsterdam in 1772 went bankrupt, many lenders were exposed. In the end, none of them actually lost money. Nonetheless, only those at risk of losing money changed their behavior markedly; they lent with much higher haircuts. The rest continued largely as before. The differential change is remarkable since the distress was public knowledge. Overall leverage in the Amsterdam stock market declined as a result.

In a symmetric information voting model, an individual (politician) can influence voters' choices by strategically designing a policy experiment (public signal). We characterize the politician's optimal experiment. With a nonunanimous voting rule, she exploits voters' heterogeneity by designing an experiment with realizations targeting different winning coalitions. Consequently, under a simple-majority rule, a majority of voters might be strictly worse off due to the politician's influence. We characterize voters' preferences over electoral rules and provide conditions for a majority of voters to prefer a supermajority (or unanimity) voting rule, in order to induce the politician to supply a more informative experiment.

We exploit a unique data set, combining rich experimental data with high-quality administrative data, to study dropout from the college track in Norway, and why boys are more likely to drop out. The paper provides three main findings. First, we show that family background and personal characteristics contribute to explain dropout. Second, we show that the gender difference in dropout rates appears both when the adolescents select into the college track and after they have started. Third, we show that different processes guide the choices of the boys and the girls of whether to drop out from the college track.

The prices of auctions on eBay often exceed eBay's fixed-price “Buy-It-Now” prices. I investigate the causes of this overbidding, focusing on the interpretation in Malmendier and Lee (2011) that the observed overbidding cannot be explained “without allowing for nonstandard preferences or beliefs” and that the “strongest direct evidence points to limited attention.” Using data from their study and new data from eBay, I provide evidence that a key condition for identifying nonstandard behavior may not have been met, and that the observed overbidding is not inconsistent with standard behavior once we allow for the likely presence of search costs.

This paper proposes to evaluate tax reforms by aggregating money metric losses and gains of different individuals using “generalized social marginal welfare weights.” Optimum tax formulas take the same form as standard welfarist tax formulas by simply substituting standard marginal social welfare weights with those generalized weights. Weights directly capture society's concerns for fairness without being necessarily tied to individual utilities. Suitable weights can help reconcile discrepancies between the welfarist approach and actual tax practice, as well as unify in an operational way the most prominent alternatives to utilitarianism such as Libertarianism, equality of opportunity, or poverty alleviation.

We study optimal redistribution and insurance in a life-cycle economy with private idiosyncratic shocks. We characterize Pareto optima, show the forces determining optimal labor distortions, and derive closed form expressions for their limiting behavior. The labor distortions for high-productivity shocks are determined by the labor elasticity and the higher moments of the shock process; the labor distortions for low-productivity shocks are determined by the autocorrelation of the shock process, redistributive objectives, and past distortions. In a model calibrated using newly available estimates of idiosyncratic shocks, the labor distortions are U-shaped and the savings distortions generally increase in current earnings.

An organization must select among competing projects that differ in their payoff consequences for its members. Each agent chooses a project and exerts effort affecting its completion time. When one or more projects are complete, the agents select which one to adopt. The selection rule for multiple projects that maximizes ex post welfare leads to inefficiently high polarization; rules that favor later proposals improve upon ex post optimal selections. The optimal degree of favoritism increases in the cost of effort and discount rate. This trade-off informs the design of process rules in standard-setting organizations and helps explain their performance.

In our incomplete markets economy households choose portfolios consisting of risky (uninsurable) capital and money. Money is a bubble, it has positive value even though it yields no payoff. The market outcome is constrained Pareto inefficient due to a pecuniary externality. Each individual agent takes the real interest rate as given, while in the aggregate it is driven by the economic growth rate, which in turn depends on individual portfolio decisions. Higher inflation due to higher money growth lowers the real interest rate on money and tilts the portfolio choice towards physical capital investment. Modest inflation boosts growth rate and welfare.