Ph.D., University of Pennsylvania, 1979 Senior Research Associate, Center for Policy Research"Estimating and Forecasting with a Dynamic Spatial Panel Data Model," with Bernard Fingleton and Alain Pirotte, Oxford Bulletin of Economics and Statistics, Volume 76, Issue 1 (February, 2014), 112-138. "Spatial Lag Models with Nested Random Effects: An Instrumental Variable Procedure with an Application to English House Prices," with Bernard Fingleton and Alain Pirotte, Journal of Urban Economics, Vol. 80 (March, 2014), 76–86. "Further Evidence on the Spatio-Temporal Model of House Prices in the United States" with Jing Li, Journal of Applied Econometrics, Vol. 29, Issue 3 (April/May, 2014), 515–522.