We provide evidence about voters' response to crime control policies. We exploit a natural experiment arising from the Italian 2006 collective pardon releasing about one third of the prison population. The pardon created idiosyncratic incentives to recidivate across released individuals and...

We study voters' response to public policies. We exploit a natural experiment arising from the Italian 2006 collective pardon that created idiosyncratic incentives to recidivate across released individuals and municipalities. We show that municipalities where resident pardoned individuals had a...

In response to the Covid-19 outbreak, among other previous "non-pharmaceutical interventions", on March 22, 2020 the Italian Government imposed an economic lockdown and ordered the closing of all non-essential economic activities. This paper estimates the causal effect of this measure on...

In this paper, we study how the birth of the first universities in Italy affected the emergence of the Italian free cities-states (the commune) in the period 1000-1300 a.d. Exploiting a panel dataset of 121 cities, we show that after the foundation of a new university the distance between each...

For a panel of 122 cities observed over 300 years in medieval northern-central Italy, we document that the occurrence of an earthquake retarded institutional transition from the feudal regime to the commune (free city state) in cities where the political and the religious leaders were one and...

Ranking algorithms are the information gatekeepers of the Internet era. We develop a stylized framework to study the effects of ranking algorithms on opinion dynamics. We consider rankings that depend on popularity and on personalization. We find that popularity driven rankings can enhance...

What is the role of the media in coordinating and mobilizing insurgency against a foreign military occupation? We analyze this question in the context of the Nazi-fascist occupation of Italy during WWII. We study the effect of BBC radio counter-propaganda (Radio Londra) on the intensity of...

Tourism accounts for around one tenth of global GDP. We analyze the impact of entertainment media in drawing tourists to filming locations (media multiplier ) and, in turn, the effect of tourism on local economic development (tourism multiplier ). To assess the media multiplier, we employ a...

This paper provides a simple theoretical framework to evaluate the effect of key parameters of ranking algorithms, namely popularity and personalization parameters, on measures of platform engagement, misinformation and polarization. The results show that an increase in the weight assigned to...

How does the internet affect young people’s mental health? We study this question in the context of Italy using administrative data on the universe of cases of mental disorders diagnosed in Italian hospitals between 2001 and 2013, which we combine with information on the availability of...