Estimating the Impacts of Program Benefits: Using Instrumental Variables with Underreported and Imputed Data

A PSC Brown Bag Seminar

Melvin Stephens, Jr

Monday, 11/3/2014.   ARCHIVED EVENT

Location: 6050 ISR Thompson St

Survey non-response has risen in recent years which has increased the share of imputed and underreported values found on commonly used datasets. While this trend has been well documented for earnings, the growth in non-response to government transfers questions has received far less attention. We demonstrate analytically that the underreporting and imputation of transfer benefits can lead to program impact estimates that are substantially overstated when using instrumental variables methods to correct for endogeneity and/or measurement error in benefit amounts. We document the importance of failing to account for these issues using two empirical examples and examine the plausibility of using straightforward methodological adjustments to generate consistent estimates.

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