"This paper reexamines the debate over whether the United States fell into a liquidity trap in the 1930s. We first review the literature on the liquidity trap focusing on Keynes's discussion of "absolute liquidity preference" and the division that soon emerged between Keynes, who believed that a...

"Post-1980 U.S. data trace out a stable long-run money demand relationship of Cagan's semi-log form between the M1-income ratio and the nominal interest rate, with an interest semi-elasticity below 2. Integrating under this money demand curve yields estimates of the welfare costs of modest...