"This paper develops a new and easily implementable necessary and sufficient condition for the exact identification of a Markov-switching structural vector autoregression (SVAR) model. The theorem applies to models with both linear and some nonlinear restrictions on the structural parameters. We...

Several authors have documented a reduced variability ofoutput and inflation in the United States since the beginningof the 1980s.1 In fact, a comparison of the 1980:1-2001:2 periodwith the two preceding decades shows that the standarddeviation of quarterly output growth has fallen 30...

[...]This article explores in several ways the structure andvocabulary of emerging payments system risks and theirmitigation. We begin by recounting several incidents of fraudand losses associated with emerging payment methods. Wethen describe an economic framework for understanding riskcontrol...