Aftershocks of Chile's earthquake for an ongoing, large-scale experimental evaluation

Evaluation designs for social programs are developed assuming minimal or no disruption from external shocks, such as natural disasters. This is because extremely rare shocks may not make it worthwhile to account for them in the design. Among extreme shocks is the 2010 Chile earthquake. Un Buen Comienzo (UBC), an ongoing early childhood program in Chile, was directly affected by the earthquake. This article discusses (a) the factors the UBC team considered for deciding whether to put on hold or continue implementation and data collection for this experimental study; and (b) how the team reached consensus on those decisions. A lesson learned is that the use of an experimental design for UBC insured that the evaluation's internal validity was not compromised by the earthquake's consequences, although cohort comparisons were compromised. Other lessons can be transferred to other contexts where external shocks affect an ongoing experimental or quasi-experimental impact evaluation.     

Barack Obama's “American” Problem: Unhyphenated Americans in the 2008 Elections*

Objectives. The largest increase of any ancestry group between the 1990 and 2000 Census in the United States were “unhyphenated Americans,” those whites who claimed an “American” or no ancestry. This article measures this group's voting habits in the 2008 elections. Methods. With individual‐level attitudinal data and county‐level voting data from the 2008 primary and 2000–2008 general elections, the analyses use quantitative methods to estimate unhyphenated Americans' voting behavior. Results. Evidence indicates a strong rejection of Obama among counties with high proportions of unhyphenated Americans in both the 2008 primary and general elections. Conclusion. While spatially concentrated in and near Appalachia, unhyphenated Americans' politics are distinctive irrespective of socioeconomic status, religion, and geography, being one of the few groups in which Barack Obama lost votes compared to previous Democratic nominees. Variation in the share of unhyphenated Americans explains more of the difference between 2008 and past elections than variation in the share of African Americans per county.