The paper makes use of an Imperfect Knowledge Economics (IKE) approach to examine the rationale and scope of state intervention in asset markets. IKE recognizes that policy officials and market participants must cope with ever-imperfect knowledge of the causal mechanism driving market outcomes....

Asset prices undergo long swings that revolve around benchmark levels. In currency markets, fluctuations involve real exchange rates that are highly persistent and that move in near-parallel fashion with nominal rates. The inability to explain these two regularities with one model has been...

Main description: In the wake of the global financial crisis that began in 2007, faith in the rationality of markets has lost ground to a new faith in their irrationality. The problem, Roman Frydman and Michael Goldberg argue, is that both the rational and behavioral theories of the market rest...