Hartwick’s rule of investigating resource rents in an economy with producible capital and exhaustible resources becomes, in a general model of heterogeneous stocks, a rule whereby the total value of net investment (resource depletion counting negative) is equal to zero. It is shown that...

Price comparison websites are commonly thought to benefit consumers by increasing competitive pressure between firms, in turn lowering prices faced by consumers. This article investigates the impact of the introduction of a PCW or ‘web aggregator’ to the market for a homogeneous good. We...

Survey respondents who make point predictions and histogram forecasts of macrovariables reveal both how uncertain they believe the future to be, ex ante, as well as their ex post performance. Macroeconomic forecasters tend to be overconfident at horizons of a year or more, but over-estimate the...

We characterise profit-maximising operating strategies, over some time horizon, for an energy store which is trading in an arbitrage market. Our theory allows for leakage, operating inefficiencies and general cost functions. In the special case where the operating cost of a store depends only on...

Political constitutions frequently separate the roles of proposer and veto player in policy-making processes. A fundamental distinction lies in whether both offices are subject to direct and separate election, or whether the voter instead may directly elect the holder of only one office. In the...

We study a novel mechanism design model in which agents each arrive sequentially and choose one action from a set of actions with unknown rewards. The information revealed by the principal affects the incentives of the agents to explore and generate new information. We characterize the optimal...

Many politicians believe they can intervene in the economy to improve people’s lives. But can they? In a social experiment carried out in the United Kingdom, extensive in-work support was randomly assigned among 16,000 disadvantaged people. We follow a sub-sample of 3,500 single parents for 5...

Conventional economic theory stipulates that output in Cournot competition is too low relative to that which is attained in perfect competition. We revisit this result in a General Cournot-competitive Equilibrium model with two industries that differ only in terms of productivity. We show that...

Not only currencies are assets in investor's portfolio, central banks use them for implementing economic policies. This implies existence of some type of dependence pattern among the currencies. We investigate such patterns among daily Deutsche Mark (DM) (Euro later), UK Sterling (GBP) and the...

Entrepreneurs must experiment to learn how good they are at a new activity. What happens when the experimentation is financed by a lender? Under common scenarios, i.e., when there is the opportunity to learn by "starting small" or when "no-compete" clauses cannot be enforced ex-post, we show...