This note introduces transferable utility cooperative games with multiple membership, extending the scope of cooperative game theory to economic environments featuring externalities and membership in multiple coalitions.  This wider class of games generalises games in characteristic and...

Many dynamic economic situations, including certain markets, can be fruitfully modeled as binary-action stochastic sequential games.  Such games have a state variable, which in the case of a market might be the inventory of the good waiting for sale.  Conditional on the state, players choose...

This paper examines the implications of "prominence" in search markets.  We model prominence by supposing that the prominent firm will be sampled first by all consumers.  If there are no systematic quality differences among firms, we find that the prominent firm will charge a lower price than...

This paper presents an industry equilibrium model of vertical integration under contractual imperfections with specific input suppliers and external investors.  I assume that vertical integration economizes on the needs for contracts with specific input suppliers at the cost of higher fixed...

What were the economic consequences of the usury doctrine in the Middle Ages?  We examine how merchants attempted to evade the prohibition on interest and the attempts of the Church to clamp down on evasion.  Contrary to the views of many economists and historians, the usury prohibition...

This research is among the first to link the literatures on migration and on subjective well-being in developing countries.  It poses the question: why do rural-urban migrant households settled in urban China have an average happiness score lower than that of rural households?  It examines the...

We propose a new measure of risk, based entirely on downward moves measured using high frequency data.  Realised semivariances are shown to have important predictive qualities for future market volatility.  The theory of these new measures is spelt out, drawing on some new results from...

This paper analyses the survival of the complete cohort of more than 162,000 limited companies incorporated in Britain in 2001 over the subsequent five-year period.  For this purpose, we estimate firms' hazards of failure and survival functions using nonparametric and semi-parametric...

We propose a multivariate realised kernel to estimate the ex-post covariation of log-prices.  We show this new consistent estimator is guaranteed to be positive semi-definite and is robust to measurement noise of certain types and can also handle non-synchronous trading.  It is the first...

Reducing fixed cost duplication - a common justification for concentrated market structure - motivated the US government to relax the number of radio stations a firm could operate in any local market.  After deregulation the number of firms per market decreased.  The implied cost saving...