Consider an economy populated by males and females, both rich and poor. The society has to choose one of the following marriage institutions: polygyny, strict monogamy, and serial monogamy (divorce and remarriage). After having identified the conditions under which each of these equilibria...

We investigate the role of manipulation in a model of opinion formation where agents have opinions about some common question of interest. Agents repeatedly communicate with their neighbors in the social network, can exert some effort to manipulate the trust of others, and update their opinions...

We model political information acquisition in large elections, where the probability of being piv- otal is negligible. Our model builds on the assumption that informed citizens enjoy discussing politics with other informed citizens. The resulting information acquisition game exhibits strate- gic...

We consider a linguistically diversified society that has to select a set of languages to be used for official purposes. We examine the notion of language disenfranchisement that is created when one or more languages fail to be included in the list of the official ones, implying that some...

The policy of official multilingualism is one of the most important and fundamental principles of the Union. However, a large number of official languages imposes substantial financial, communication and legal costs. We address the merits of extensive multilingualism and formulate an analytical...

We examine patterns of acquiring non-native languages in a model with two linguistic communities with heterogeneous learning skills, where every individual faces the choice of self-learning the foreign language or acquiring it at a profit-maximizing linguistic school. We consider a one-school...

The press industry depends in a crucial way on the possibility of financing an important fraction of its activities by advertising receipts. We show that this induces the editors of the newspapers to moderate the political message they display to their readers in order to make their newspaper...

We analyse the rivalry between two TV-channels competing both on the market for audience and the market for advertising. We identify the nature of TV-programs emerging from this competition, and the quantity of advertising that TV-viewers will have to attend at equilibrium. Finally, we examine...

At a Nash-Walras equilibrium, individuals exchange commodities competitively, and, simultaneously, they interact strategically. Under standard assumptions, Nash-Walras equilibria exist, equilibrium profiles of actions are, typically, determinate byt Pareto suboptimal, though not constrained...

Profit maximization is not a well defined objective when markets are incomplete. Several criteria of investment choice have therefore been put forward in the literature, some of which crucially hinge upon aggregation of shareholders' preferences, as is the case with the criteria proposed by...