Nontechnical Papers on Program Evaluation, Experimentation, and Causal Modeling

Issues in the Estimation of Causal Effects in Population Research, With an Application to the Effects of Teenage Childbearing, 2009

Forecasting the Effects of Scaling Up Social Programs: An Economics Perspective, 2006

Remarks on the Analysis of Causal Relationships in Population Research, Demography, Feb. 2005

The Role of Randomized Field Trials in Social Science Research, American Behavioral Scientist, Jan. 2004

Causal Analysis in Population Research: An Economist's Perspective, Population and Development Review, Sep. 2003

Program Evaluation with Nonexperimental Data, Evaluation Review, June 1991