Working papers results

A structural Factor-Augmented VAR model is used to evaluate the role of 'news' shocks in generating the business cycle. We find that (i) existing small-scale VAR models are affected by 'non-fundamentalness' and therefore fail to recover the correct shock and impulse response functions; (ii) news shocks have a smaller role in explaining the business cycle than previously found in the literature; (iii) their effects are essentially in line with what predicted by standard theories; (iv) a substantial fraction of business cycle
uctuations are explained by shocks unrelated to technology.

We exploit a change in compulsory schooling laws in Turkey to estimate the causal effects of
education on religiosity and women's empowerment. A new law implemented in 1998 resulted in individuals born after a specific date to be more likely to complete at least 8 years of schooling while those born earlier could drop out after 5 years. This allows the implementation of a Regression Discontinuity (RD) Design and the estimation of meaningful causal estimates of schooling. Using the 2008 Turkish Demographic Health Survey, we show that the reform resulted in a one-year increase in years of schooling among women on average. Over a period of ten years, this education increase resulted in women reporting lower levels of religiosity, greater decision rights over marriage and higher household consumption (of durables). We find that these effects work through different channels, depending on women's family background. For women whose mothers had no formal education, the reform resulted in them only finishing the compulsory schooling and having higher labor force participation. For women whose mothers had some formal education, the reform had persistent effects beyond compulsory schooling, and these women were subsequently married to more educated (and possibly wealthier) husbands but remained outside the labor force. We interpret these findings as evidence that education may empower women across a wide spectrum of a Muslim society, yet, depending on pre-reform constraints to participation, its effects may not be strong enough to fully overcome participation constraints (in education or the labor force).

In this paper we estimate the marriage market returns to being admitted to a higher ranked (i.e. more "elite") university by exploiting unique features of the Chilean university admission system.This system centrally allocates applicants based on their university entrance test score, which allows us to identify causal effects by using a regression discontinuity approach. Moreover, the Chilean context provides us with the necessary data on the long run outcome 'partner quality'. We find that being admitted to a higher ranked university has substantial returns in terms of partner quality for women, while estimates for men are about half the size and not significantly different from zero.

Many violations of the Independence axiom of Expected Utility can be traced to subjects' attraction to risk-free prospects. Negative Certainty Independence, the key axiom in this paper, formalizes this tendency. Our main result is a utility representation of all preferences over monetary lotteries that satisfy Negative Certainty Independence together with basic rationality postulates. Such preferences can be represented as if the agent were unsure of how risk averse to be when evaluating a lottery p; instead, she has in mind a set of possible utility functions over outcomes and displays a cautious behavior: she computes the certainty equivalent of p with respect to each possible function in the set and picks the smallest one. The set of utilities is unique in a well-defined sense. We show that our representation can also be derived from a 'cautious' completion of an incomplete preference relation.

This paper investigates the differential response of male and female voters to competitive persuasion in political campaigns. During the 2011 municipal elections in Milan, a sample of eligible voters was randomly divided into three groups. Two were exposed to the same incumbent's campaign but to different opponent's campaigns, with either a positive or a negative tone. The third-control-group received no electoral information. The campaigns were administered online and consisted of a bundle of advertising tools (videos, texts, slogans). Stark gender differences emerge. Negative advertising increases men's turnout, but has no effect on women. Females, however, vote more for the opponent and less for the incumbent when they are exposed to the opponent's positive campaign. Exactly the opposite occurs for males. Additional tests show that our results are not driven by gender identification with the candidate, ideology, or other voter's observable attributes. Effective strategies of persuasive communication should thus take gender into account. Our results may also help to reconcile the conflicting evidence on the effect of negative vs. positive advertising, as the average impact may wash out when aggregated across gender.

Rational voters update their subjective beliefs about candidates' attributes with the arrival of information, and subsequently base their votes on these beliefs. Information accrual is, however, endogenous to voters' types and difficult to identify in observational studies. In a large scale randomized trial conducted during an actual mayoral campaign in Italy, we expose different areas of the polity to controlled informational treatments about the valence and ideology of the incumbent through verifiable informative messages sent by the incumbent reelection campaign. Our treatments affect both actual vote shares at the precinct level and vote declarations at the individual level. We explicitly investigate the process of belief updating by comparing the elicited priors and posteriors of voters, finding heterogeneous responses to information. Based on the elicited beliefs, we are able to structurally assess the relative weights voters place upon a candidate's valence and ideology. We find that both valence and ideological messages affect the first and second moments of the belief distribution, but only campaigning on valence brings more votes to the incumbent. With respect to ideology, cross-learning occurs, as voters who receive information about the incumbent also update their beliefs about the opponent. Finally, we illustrate how to perform counterfactual campaigns based upon the structural model.

In a decision problem under uncertainty, a decision maker considers a set of alternative actions whose consequences depend on uncertain factors outside his control. Following Luce and Raiffa (1957), we adopt a natural representation of such situation that takes as primitives a set of conceivable actions A, a set of states S and a consequence function from actions and states to consequences in C. With this, each action induces a map from states to consequences, or Savage act, and each mixed action induces a map from states to probability distributions over consequences, or Anscombe-Aumann act. Under a consequentialist axiom, preferences over pure or mixed actions yield corresponding preferences over the induced acts. The most common approach to the theory of choice under uncertainty takes instead as primitive a preference relation over the set of all Anscombe-Aumann acts (functions from states to distributions over consequences). This allows to apply powerful convex analysis techniques, as in the seminal work of Schmeidler (1989) and the vast descending literature. This paper shows that we can maintain the mathematical convenience of the Anscombe-Aumann framework within a description of decision problems which is closer to applications and experiments. We argue that our framework is more expressive, it allows to be explicit and parsimonious about the assumed richness of the set of conceivable actions, and to directly capture preference for randomization as an expression of uncertainty aversion.

We examine a number of unexplored factors that affect the ex-post adoption rates of newly listed stock options. We show that a variety of measures of information asymmetries for underlying stocks predict option adoption rates. This occurs even when we control for factors that have been found to be significant in earlier literature, such as stock volatility and volume. However, option listings induce a reduction in the strength of the information asymmetries in the underlying stock. Further, option bid-ask spreads start from low initial levels and increase over time, which is consistent with a modest initial aggressiveness of informed investors.

We examine asset allocation decisions under smooth ambiguity aversion when an investor has a prior degree of belief in an asset pricing model (e.g., the domestic CAPM). Different from the Bayesian portfolio approach, in our model the investor separately relies on the conditional distribution of returns and on the posterior over uncertain parameters to make asset allocation decisions, rather than on the predictive distribution of returns that integrates priors and likelihood information in a single distribution. This is a key feature implied by smooth ambiguity preferences. We find that in the perspective of US investors, ambiguity aversion can generate strong home bias in their equity holdings, regardless of their belief in the domestic CAPM or of their degree of risk aversion. Our results extend and become stronger under regime-switching investment opportunities.

We investigate the lead-lag relationships between issuer- and investor-paid credit rating agencies, in the aftermath of the regulatory reforms undertaken in the U.S. between 2002 and 2006 -including watch list inclusions and outlooks. First, we find that the lead effect of investor-paid over issuer-paid credit rating agencies has weakened: in recent years, causality has turned bi-directional. Second, when changes in outlooks are included, we find evidence of a less conservative behavior by issuer-paid agencies, when compared to their rating behavior. Third, stock prices manifest statistically significant abnormal reactions to downgrades of all agencies; however, abnormal negative returns are significantly higher for investor-paid downgrades. Our results support the hypothesis that when issuer-paid agencies have seen their market power threatened by tighter regulations, they have felt incentives to improve the quality and timeliness of their ratings. However, event studies show that markets still price stocks under the assumption that investor-paid rating actions carry superior information.