Taken from the paper, A Measure of Segregation Based on Social Interactions (with F. Echenique, forthcoming in Quarterly Journal of Economics

• Matlab files to calculate the spectral index: callspec.m, blockspectral.m, neighbors.m
• Racial Segregation
  • Indices for every city block in all major MSAs and PMSAs for 2000 and 1990
  • Indices for all major MSAs and PMSAs for 2000 and 1990
  • Popular Existing Indices Calculated at the Census Block Level for 2000 and 1990
• Education Segregation
  • Indices for all Major MSAs and PMSAs: 2000 and 1990

Taken from the paper, Guess Who's Been Coming to Dinner? Trends in Interracial Marriage over the 20th Century, forthcoming in Journal of Economic Perspectives

• Figures and Regressions

Taken from the paper, Measuring Crack Cocaine and Its Impact (with P. Heaton, S. Levitt, and K. Murphy) April 2006.

• Crack Indices reported in the paper for Cities and States
• Crack Indices adjusted for racial composition for Cities and States