Eliana La Ferrara

Who Trusts Others

Both individual experiences and community characteristics influence how much people trust each other. Using individual level data drawn from US localities we find that the strongest factors associated with low trust are: i) a recent history of traumatic experiences; ii) belonging to a group that historically felt discriminated against, such as minorities (blacks in particular) and, to a lesser extent, women; iii) being economically unsuccessful in terms of income and education; iv) living in a racially mixed community and/or in one with a high degree of income disparity. Religious beliefs and ethnic origins do not significantly affect trust. The role of racial cleavages leading to low trust is confirmed when we explicitly account for individual preferences on inter-racial relationships: within the same community, individuals who express stronger feelings against racial integration trust relatively less the more racially heterogeneous the community is.

Ethnic Diversity and Economic Performance

We survey and assess the literature on the positive and negative effects of ethnic diversity on economic policies and outcomes. Our focus is on communities of different size and organizational structure, such as countries, cities in developed countries, and villages and groups in developing countries. We also consider the endogenous formation of political jurisdictions and highlight several open issues in need of further research, in particular the endogenous formation of ethnic identity and the measurement of ethnic diversity.

Participation in Heterogeneous Communities

This paper studies both theoretically and empirically the determinants of group formation and of the degree of participation when the population is heterogeneous, both in terms of income and race or ethnicity. We are especially interested in whether and how much the degree of heterogeneity in communities influences the amount of participation in different types of groups. Using survey data on group membership and data on US localities, we find that, after controlling for many individual characteristics, participation in social activities is significantly lower in more unequal and in more racially or ethnically fragmented localities. We also find that those individuals who express views against racial mixing are less prone to participate in the groups the more racially heterogeneous their community is.

Soap Operas and Fertility: Evidence from Brazil

This paper focuses on fertility choices in Brazil, a country where soap operas (novelas) portray families that are much smaller than in reality, to study the effects of television on individual behavior. Using Census data for the period 1970-1991, the paper finds that women living in areas covered by the Globo signal have significantly lower fertility. The effect is strongest for women of lower socioeconomic status and for women in the central and late phases of their fertility cycle. Finally, the paper provides evidence that novelas, rather than television in general, affected individual choices.

Kin Groups and Reciprocity: A Model of Credit Transactions in Ghana

This Paper studies kinship-band networks as capital market institutions. It explores two of the channels through which membership in a community where individuals are genealogically linked, such as a kin group, can affect their access to informal credit. The first is that incentives to default are lower for community members who can expect retaliation to fall on their offspring as well as on themselves (social enforcement). The second is that lenders prefer to lend to those members from whom they can expect reciprocation in the form of future loans for themselves or for their children (reciprocity). The possibility to engage in reciprocal transactions affects the terms of the loans in nontrivial ways. The social enforcement and reciprocity effects are incorporated in an overlapping generations repayment game with endogenous matching between lenders and borrowers, and are tested using household-level data from Ghana.

Inequality and Group Participation: Theory and Evidence from Rural Tanzania

This paper investigates the determinants of group membership, and in particular the e¤ect of income inequality on individual incentives to join economic groups. Drawing on a simple model, we show that an increase in inequality has an ambiguous e¤ect and that the type of access rule (open versus restricted access) is key in determining what income categories are represented in the group. Furthermore, the shape of the income distribution can be crucial to determine whether increased inequality leads to more or less group participation. Using survey data from rural Tanzania we ...nd that inequality at the village level has a negative impact on the likelihood that the respondents are members of any group. This e¤ect is particularly signi...cant for relatively wealthier people, both when relative wealth is ‘objectively’ measured, and when it is ‘subjectively’ de...ned. However, when we disaggregate groups by type of access rule, we ...nd that inequality decreases participation in open access groups when there are wide disparities at the bottom of the distribution, while it increases participation in restricted access groups when the disparities are around the middle and top part of the distribution. Finally, we assess the impact of inequality on various dimensions of group functioning.

Television and Divorce: Evidence from Brazilian Novelas

This paper studies the link between television and divorce in Brazil by exploiting variation in the timing of availability of the signal of Rede Globo—the network that had a virtual monopoly on telenovelas in the country—across municipal areas. Using three rounds of Census data (1970, 1980 and 1991) and controlling for area fixed effects and for time-varying characteristics, the paper finds that the share of women who are separated or divorced increases significantly after the Globo signal becomes available. The effect is robust to controlling for potential determinants of Globo’s entry strategy and is stronger for relatively smaller areas, where the signal reaches a higher fraction of the population.

The Economic Effects of Violent Conflict: Evidence from Asset Market Reactions

This article studies the effects of conflict onset on asset markets applying the event study methodology. The authors consider a sample of 101 internal and inter-state conflicts during the period 1974—2004 and find that a sizeable fraction of them has had a significant impact on stock market indices, exchange rates, oil and commodity prices. This fraction is inconsistent with pure chance, that is, with the selected probability of type-I errors in our tests of statistical significance. The results suggest that, on average, national stock markets are more likely to display positive than negative reactions to conflict onset. When the authors distinguish between internal and inter-state conflicts, they find that the fraction of significant results is higher for international conflicts. When the authors classify events according to the region where they occur, they find that Asia and the Middle East are the regions where conflicts tend to have the strongest effects. Finally, the article reports evidence that abnormal returns would have accrued to investors systematically exploiting conflict onset to implement conflict-driven strategies. Results are robust to selecting a subset of high-intensity conflicts and to expanding the time window over which conflict events are defined. The findings of the article confirm the economic importance of the effects of conflicts on asset markets.

Conflict, Climate and Cells: A Disaggregated Analysis

We conduct a disaggregated empirical analysis of civil conflict at the subnational level in Africa over 1997 to 2011 using a new gridded data set. We construct an original measure of agriculture-relevant weather shocks exploiting within-year variation in weather and in crop growing season and spatial variation in crop cover. Temporal and spatial spillovers in conflict are addressed through spatial econometric techniques. Negative shocks occurring during the growing season of local crops affect conflict incidence persistently, and local conflict spills over to neighboring cells. We use our estimates to trace the dynamic response to shocks and predict how future warming may affect violence.

Public Capital and Economic Performance: Evidence from Italy

This paper addresses the issue of whether and by how much public capital can enhance economic performance. We apply different methodologies to Italian regional data for the period 1970-1994. The results are presented for Italy as a whole, for different macroregions, and for individual categories of public capital. For the Center and the South, the methodologies employed indicate a positive contribution of infrastructure investment to TFP growth, output, and cost reduction. However, the magnitude of the cost reducing effect does not seem large enough to outweigh the social user cost of public capital. Also, we get mixed results on which types of infrastructure are most effective. Overall, investment in transportation appears to be the most productive: railways in the North and roads in the Center and South are the categories that mostly contributed to TFP growth.