TY - JOUR AU - Ball,Laurence AU - Romer,David TI - Real Rigidities and the Non-Neutrality of Money JF - National Bureau of Economic Research Working Paper Series VL - No. 2476 PY - 1990 Y2 - July 1990 UR - http://www.nber.org/papers/w2476 L1 - http://www.nber.org/papers/w2476.pdf N1 - Author contact info: Laurence M. Ball Department of Economics Johns Hopkins University Baltimore, MD 21218 Tel: 410/516-7605 Fax: 410/516-7600 E-Mail: lball@jhu.edu David H. Romer Department of Economics University of California, Berkeley Berkeley, CA 94720-3880 E-Mail: dromer@econ.berkeley.edu AB - Rigidities in real prices are not sufficient to create rigidities in nominal prices and real effects of nominal shocks. And, by themselves, small frictions in nominal adjustment, such as costs of changing prices, create only small non-neutralities. But this paper shows that substantial nominal rigidity can arise from a combination of real rigidities and small nominal frictions. The paper shows the connection between real and nominal rigidity given the presence of nominal frictions both in general and for several specific sources of real rigidity: costs of adjusting real prices, asymmetric demand arising from imperfect information, and efficiency wages. ER -