TY - JOUR AU - Bernard, Andrew B AU - Jensen, J. Bradford TI - Understanding Increasing and Decreasing Wage Inequality JF - National Bureau of Economic Research Working Paper Series VL - No. 6571 PY - 1998 Y2 - May 1998 DO - 10.3386/w6571 UR - http://www.nber.org/papers/w6571 L1 - http://www.nber.org/papers/w6571.pdf N1 - Author contact info: Andrew B. Bernard Tuck School of Business at Dartmouth 100 Tuck Hall Hanover, NH 03755 Tel: 603/646-0302 Fax: 603/646-0995 E-Mail: Andrew.B.Bernard@dartmouth.edu J. Bradford Jensen McDonough School of Business Georgetown University Washington, DC 20057 Tel: 202/687-3767 E-Mail: jbj24@georgetown.edu M1 - published as Andrew B. Bernard, J. Bradford Jensen. "Understanding Increasing and Decreasing Wage Inequality," in Robert C. Feenstra, editor, "The Impact of International Trade on Wages" University of Chicago Press (2000) AB - This paper uses data on inequality within U.S. states to test hypotheses about the sources of rising wage inequality during the 1970s and 1980s. State labor markets are found to respond to local demand shocks in the short and medium run and to national (industry) demand shocks only after long intervals. The measure of wage inequality employed in the paper is the (log) ratio of the weekly wage at the 90th percentile to that at the 10th percentile in the state after controlling for observable characteristics of the workers. Individual states are found to have very different levels and changes of inequality. For example, Pennsylvania and Georgia had the second lowest and ninth highest 90-10 ratios respectively in 1970. By 1990, Georgia's 90-10 ratio had fallen 4% while Pennsylvania's had risen 21%. This paper finds that changes in industrial composition, in particular the loss of durable manufacturing jobs, are strongly correlated with inequality increases. ER -