There are many situations where the indifference classes of the agents’ preferences are exogenously given. We present a framework for dealing with such situations and find that the cardinality of the set S, which consists of alternatives that every agent ranks strictly, is critical to the construction of a strategyproof social choice function; if |S| ≥ 3, then strategy-proofness implies dictato...

Generalization in information systems research is important because of the highly applied and vocational nature of the field. However, the concept is often inappropriately and narrowly confined to one or two views of research. This paper develops the concept of generalizability as a two-stage process. The first stage involves creating a general case from a base case (or cases). The second stage...

BACKGROUND A number of studies have shown variations in the occurrence of alcoholism between different socioeconomic groups and occupations, but it has not been clear to what extent this is related to the average alcohol consumption in the same socioeconomic groups or occupations. METHODS The relationship between socioeconomic group and occupation and hospital discharge 1981-1983 due to 'diag...

Social networks are usually represented as graphs with each person as a node and each social relationship as an edge. As frequently observed, if one considers social structures over time, those relationships, indeed even the people, come and go so that a static graph does not capture important aspects of the overall situation. Adding a temporal component to the graph results in specifying an ev...

The social performance of fiscal redistributive mechanisms in Canada continues to receive a growing interest from politicians and research scientists. The aim of this paper is to assess the evolution of social classes in Canada and to check whether the market and governmental redistribution factors have affected their evolution during the last decade. We focus on the dynamic of inequality, pola...

Bipartite graphs have received some attention in the study of social networks and of biological mutualistic systems. A generalization of a previous model is presented, that evolves the topology of the graph in order to optimally account for a given contact preference rule between the two guilds of the network. As a result, social and biological graphs are classified as belonging to two clearly ...

OBJECTIVE Geographical variations in adult obesity rates have been attributed in part to variations in social and economic inequalities. Insecurity is associated with obesity at the cross-national level, but there is little empirical evidence to show that insecurity contributes to the structuring of adult obesity rates at the subnational level. This is examined in this study across local author...

Reasoning during social interactions requires the individual manipulation of mental representations of one's own traits and those of other people as well as their joint consideration (relational integration). Research using nonsocial paradigms has linked relational integration to activity in the rostrolateral PFC. Here, we investigated whether social reasoning is supported by the same general s...