We study an industry in which an upstream monopolist supplies an essential input at a regulated price to several downstream firms. Legal unbundling means that a downstream firm owns the upstream firm but this upstream firm is legally independent and maximizes its own upstream profits. We allow...

We study an industry with a monopolistic bottleneck (e.g. a transmission network) supplying an essential input to several downstream firms. Under legal unbundling the bottleneck must be operated by a legally independent upstream firm, which may be partly or fully owned by an incumbent active in...

Pro-life advocates focus on a single entity, the foetus. Pro-choice advocates focus on another single entity, the pregnant mother. There should also be a third focus, on all people already born on how a new entrant on average damages (or enhances) the whole community. Communal accounts are...

Government spending shocks are frequently identified in quarterly time-series data by ruling outa contemporaneous response of government spending to other macroeconomic aggregates. We provide evidence that this assumption may not be too restrictive for U.S. annual time-series data. -- Government...

Government expenditure can be highly variable, if used as a countercyclical instrument, or as a response to economic crises or as a means of rapidly altering other features of the economy. An alternative policy setting is to keep government expenditure changes gradual and modest. It is shown...

Variance of exchange rates around predictions can be from 1) undiscovered fundamentals, 2) efficient markets, 3) destabilising speculation, or 4) regime and personality differences in the heuristics used in the stage of evaluating alternatives. Field and experimental evidence identifies 4) as...