Several contractual situations are such that the parties may 'step out' of negotiations and take up outside opportunities only if there is mutual consent to do so. Examples include employer - employee negotiations, divorce and inheritance procedures, and arbitration. To analyse such cases we...

We propose an extension of Tversky's lexicographic semiorder to a model of boundedly rational choice. We explore the connection with sequential rationalisability of choice, and we provide axiomatic characterisations of both models in terms of observable choice data.

Opportunities in society are commonly interpreted as 'chances of success'. Within this interpretation, should opportunities be equalised? We show that a liberal principle of justice and a limited principle of social rationality imply that opportunity profiles should be evaluated by means of a...

We analyse the liberal ethics of noninterference applied to social choice. A liberal principle capturing noninterfering views of society and inspired by John Stuart Mill's conception of liberty, is examined. The principle captures the idea that society should not penalise agents after changes in...

We propose a new theory of choice between lotteries, which combines an 'economic' view of decision making - based on a rational, though incomplete, ordering - with a 'psychological' view - based on heuristics. This theory can explain observed violations of EU theory, namely all cyclical patterns...

In Bayesian game theory, each player obeys the Savage axioms and there is common knowledge of this. The author shows that two of the less controversial axioms (ordering and dominance) are incompatible with some elementary game theoretic principles. He furthermore argues that his impossibility...