This account of turnpike theorems concentrates on the discrete time model, descended from the early von Neumann growth model and the Dosso model. It portrays the current state of the theory under the following five headings: (i) a turnpike in the von Neumann model, (ii) a turnpike in the Ramsey...

Roth is the major force in creating a vibrant field of matching theory and its application to market design. In doing so, he has discovered many properties of the stable matching problem (especially from the strategic viewpoint of game theory), studied real-life cases to test the relevance of...

Valuing health outcomes is a fundamental concern in health economics. This article considers a measure of health outcomes: the Quality Adjusted Life Year (QALY). The QALY has been used extensively for two main reasons: (1) it arguably values health outcomes in a more acceptable metric than money...

This article delineates a broad conceptual framework for predicting physician behavioral response to financial incentives. The framework views incentives within a two-tiered hierarchy: (1) private health plan or public program payments to the provider organization, e.g., the medical group...

The open source model is a form of software development in which the source code is made available, free of charge, to all interested parties; further users have the right to modify and extend the program. Open source software (OSS) methods rely on developers who reveal the source code under an...

This article provides a brief overview of AIG's operations and explains why AIG suddenly collapsed. It then details the terms of the initial US government bailout and later restructurings. Finally, the article describes the regulatory gap exploited by AIG and ensuing regulatory reform.

The EU's CAP has changed significantly over theyears, largely as a result of international pressure through GATT and the WTO, but it still has the support of farm incomes as its main concern. The old CAP of market price support has more or less been displaced by decoupled income support, in the...

Fannie Mae and Freddie Mac are two large companies – ‘government-sponsored enterprises' (GSEs) – that are heavily involved in the secondary market for residential mortgages. The GSEs' expansion into lower quality mortgages, especially during the middleyears of the 2000s, was supported by...

During the subprime mortgage crisis of 2007–2008, previously profitable loans to subprime borrowers turned sour and investments thought to be as safe as government debt sustained severe and unexpected losses. The crisis reconfigured the US financial services industry and helped spark the worst...

This entry examines the approach of Hyman P. Minsky to financial crisis. Minsky famously developed an ‘investment theory of the cycle and a financial theory of investment'. His thesis was that, over the course of the cycle, behaviour changes in such a way that financial fragility develops....