A tale of two cities: an experiment on inequality and preferences

The existence of a strong link between socio-economic background and individual preferences has been documented among both children and grown-ups. Here, we study whether such a correlation persists even in a highly homogeneous population of young adults: university students. Our findings indicate that participants living in an area characterized by a high socio-economic environment tend to trust more and are more inclined to reciprocate higher levels of trust, as compared to those coming from less wealthy neighborhoods. This behavioral difference is, at least in part, driven by heterogeneities in beliefs: subjects from the most affluent part of the city have more optimistic expectations on their counterpart's trustworthiness than those living in a lower socio-economic environment. By contrast, no significant differences emerge in other preferences: generosity, risk attitudes, and time preferences. Finally, we do not find any systematic evidence of out-group discrimination based on neighborhood identity

Trustworthy by Convention

Social life offers innumerable instances in which trust relations involve multiple agents. In an experiment, we study a new setting called Collective Trust Game where there are multiple trustees, who may have an incentive to coordinate their actions. Trustworthiness has also a strategic motivation, and the trusters' decision depends upon their beliefs about the predominant convention with regard to trustworthiness. In this respect, the Collective Trust Games offers a richer pattern of behavior than dyadic games. We report that the levels of trustworthiness are almost thirty percentage points higher when strategic motivations are present rather than not. Higher levels of trustworthiness also led to higher levels of trust. Moreover, strategic motives appear as a major drive for trustees, comparable in size to positive reciprocity, and more important than concerns for equality

Unbundling Efficient Breach: An Experiment

Current law and economics scholarship analyzes efficient breach cases monolithically. The standard analysis holds that breach is efficient when performance of a contract generates a negative total surplus for the parties. However, by simplistically grouping efficient breach cases as of a single kind, the prior literature overlooks that gainseeking breaches might be different from loss-avoiding breaches. To capture these different motives, we designed a novel game called Contract-Breach Game where we exogenously varied the reasons for the breach — pursuing a gain or avoiding a loss — under a specific performance remedy. Results from an incentivized laboratory experiment indicate that the motives behind the breach induce sizable differences in behavior; subjects are less willing to renegotiate when facing gain-seeking than loss-avoiding breaches, and the compensation premium obtained by the promisee is higher. Our analysis suggests that inequality aversion is an important driver of our results; indeed, inequality-averse subjects accept low offers more often in cases of loss-avoiding breaches than gain-seeking breaches. These results give us insight into the preferences and expectations of ordinary people in a case of a breach

Regional disparities in Italy may have to do with trust and cooperation

They can't be simply attributed to differences in infrastructure, institutions and economic policies, write Maria Bigoni, Stefania Bortolotti, Marco Casari, Diego Gambetta and Francesca Pancott

Cooperation Hidden Frontiers: The Behavioral Foundations of the Italian North-South Divide

Socio-economic performance differs not only across countries but within countries too and can persist even after religion, language, and formal institutions are long shared. One interpretation of these disparities is that successful regions are characterized by higher levels of trust, and, more generally, of cooperation. Here we study a classic case of within-country disparities, the Italian North-South divide, to find out whether people exhibit geographically distinct abilities to cooperate independently of many other factors and whence these differences emerge. Through an experiment in four Italian cities, we study the behavior of a sample of the general population toward trust and contributions to the common good. We find that trust and contributions vary in unison, and diminish moving from North to South. This regional gap cannot be attributed to payoffs from cooperation or to institutions, formal or informal, that may vary across Italy, as the experimental methodology silences their impact. The gap is also independent of risk and other-regarding preferences which we measure experimentally, suggesting that the lower ability to cooperate we find in the South is not due to individual \moral" flaws. The gap could originate from emergent collective properties, such as different social norms and the expectations they engender. The absence of convergence in behavior during the last 150 years, since Italy was unified, further suggests that these norms can persist overtime. Using a millennium-long dataset, we explore whether the quality of past political institutions and the frequency of wars could explain the emergence of these differences in norms

Economic Polarization and Antisocial Behavior: an experiment

We experimentally study a situation where only the rich can reduce inequality while the poor can express their discontent by destroying the wealth of a rich counterpart with whom they had no previous interaction. We test whether the emergence of such forms of antisocial behavior depends only on the level of inequality, or also on the conditions under which inequality occurs. We compare an environment in which the rich can unilaterally reduce inequality with one where generosity makes them vulnerable to exploitation by the poor. We find that the rich are expected to be more generous in the former scenario than in the latter, but in fact this hope is systematically violated. We also observe that the poor engage in forms of antisocial behavior more often when reducing inequality would be safe for the rich. These results cannot be rationalized by inequality aversion alone, while they are in line with recent models that focus on anger as the result of the frustration of expectations

Non-Syndromic Sensorineural Prelingual and Postlingual Hearing Loss due to COL11A1 Gene Mutation

This paper aims to present a third world case of Non-Syndromic sensorineural hearing loss (NSHL) due to a novel missense variant in COL11A1 gene, defined as DFNA37 non-syndromic hearing loss. The clinical features of a 6-year-old boy affected by a bilateral moderate to severe down-sloping sensorineural hearing loss are presented, as well as the genetic analysis, the latter identifying a heterozygous missense variation in the COL11A1 gene. In addition, in families with autosomal dominant transmission, COL11A1 gene should be considered in the genetic workup of the NSHL with prelingual onset

The Enigmatic Genetic Landscape of Hereditary Hearing Loss: A Multistep Diagnostic Strategy in the Italian Population

Hearing loss is the most frequent sensorineural disorder, affecting approximately 1:1000 newborns. Hereditary forms (HHL) represent 50–60% of cases, highlighting the relevance of genetic testing in deaf patients. HHL is classified as non-syndromic (NSHL—70% of cases) or syndromic (SHL—30% of cases). In this study, a multistep and integrative approach aimed at identifying the molecular cause of HHL in 102 patients, whose GJB2 analysis already showed a negative result, is described. In NSHL patients, multiplex ligation probe amplification and long-range PCR analyses of the STRC gene solved 13 cases, while whole exome sequencing (WES) identified the genetic diagnosis in 26 additional ones, with a total detection rate of 47.6%. Concerning SHL, WES detected the molecular cause in 55% of cases. Peculiar findings are represented by the identification of four subjects displaying a dual molecular diagnosis and eight affected by non-syndromic mimics, five of them presenting Usher syndrome type 2. Overall, this study provides a detailed characterisation of the genetic causes of HHL in the Italian population. Furthermore, we highlighted the frequency of Usher syndrome type 2 carriers in the Italian population to pave the way for a more effective implementation of diagnostic and follow-up strategies for this disease

Mosaic Trisomy 16 Confined to Placenta: Pregnancy Outcome and Postnatal Follow up

The mother was a 29-year-old Caucasian healthy woman gravida 1, para 0 and she was referred to prenatal diagnosis to S..