NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

NBER Working Papers by Marianne H. Wanamaker

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Working Papers

November 2014The Perverse Impact of Calling for Energy Conservation
with J. Scott Holladay, Michael K. Price: w20706
In periods of high energy demand, utilities frequently issue "emergency" appeals for conservation over peak hours to reduce brownout risk. We estimate the impact of such appeals using high-frequency data on actual and forecasted electricity generation, pollutant emission measures, and real-time prices. Our results suggest a perverse impact; while there is no significant reduction in grid stress over superpeak hours, such calls lead to increased off -peak generation, CO2 emissions, and price volatility. We postulate that consumer attempts at load shifting lead to this result.
June 2013Selection and Economic Gains in the Great Migration of African Americans: New Evidence from Linked Census Data
with William J. Collins: w19124
The onset of World War I spurred the "Great Migration" of African Americans from the U.S. South, arguably the most important internal migration in U.S. history. We create a new panel dataset of more than 5,000 men matched from the 1910 to 1930 census manuscripts to address three interconnected questions: To what extent was there selection into migration? How large were the migrants' gains? Did migration narrow the racial gap in economic status? We find evidence of positive selection, but the migrants' gains were large. A substantial amount of black-white convergence in this period is attributable to migration.

Published: William J. Collins & Marianne H. Wanamaker, 2014. "Selection and Economic Gains in the Great Migration of African Americans: New Evidence from Linked Census Data," American Economic Journal: Applied Economics, American Economic Association, vol. 6(1), pages 220-52, January. citation courtesy of

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