Friedman's Hypothesis and Cross-Regional Inflation Dispersion
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This study shows that higher inflation is associated with increased inflation dispersion across U.S. cities and regions. Regression analysis indicates that cross-regional inflation variability is positively related to both inflation and inflation expectations based on consumer price inflation for 18 U.S. cities. Similar results are obtained after excluding five of the 18 cities that may be disproportionately impacted by energy shocks. In addition, cointegration analysis shows greater cross-regional price dispersion over time during the higher inflation period of 1978-1987 than during 1988-1997. These findings suggest that high inflation is associated with greater uncertainty for businesses and policy makers.