The jargon of economics and finance contains numerous colorful terms for market-asset prices at odds with any reasonable economic explanation. Examples include "bubble," "tulipmania," "chain letter," "Ponzi scheme," "panic," "crash," "herding," and "irrational exuberance." Although such a term...

The IMF Working Papers series is designed to make IMF staff research available to a wide audience. Almost 300 Working Papers are released each year, covering a wide range of theoretical and analytical topics, including balance of payments, monetary and fiscal issues, global liquidity, and...