In the proto-coalition model of government formation, formateur F appoints a proto-coalition and asks its members … whether to start negotiating a coalition contract. If all accept, then the proto-coalition forms and starts negotiating …; otherwise a caretaker government assumes office. I extend this model by allowing F to revise the chosen proto-coalition after …

In view of behavioral patterns left unorganized by current social preference theories, we propose a theory of reference … effects that are conditional on whether or not payoffs meet reference points. We verify the theory first by experimentally …

Most important results in Social Choice Theory concern impossibility theorems. They claim that no function, as complex …, adopting new voting ideas can push back those limits. Some years ago, such a work was boosted by Balinski and Laraki on the … candidates by voters. Recently, Ngoie and Ulungu have proposed a new voting function – defined in both Balinski and Laraki …

intuitive way, weaknesses of a single member voting system. This paper characterizes congolese voters’ behavior by province and …

The purpose of this paper is to have in a simple and detailed way the significant results in theory of social choice …