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complicated by the non-observability of the outcome of interest due to attrition, sample selection, or survey non-response. To … tackle the latter problem, the latent ignorability (LI) assumption imposes that attrition/sample selection is independent of … the outcome conditional on the treatment compliance type (i.e., how the treatment behaves as a function of the instrument …
Persistent link: https://www.econbiz.de/10012697819
Under a sample selection or non-response problem, where a response variable y is observed only when a condition δ = 1 is met, the identified mean E(y&7Cδ = 1) is not equal to the desired mean E(y). But the monotonicity condition E(y&7Cδ = 1) ≤ E(y&7Cδ =  0) yields an informative...
Persistent link: https://www.econbiz.de/10009228552
outcomes are only partially observed due to sample selection or outcome attrition. We assume sequential conditional … missing at random or instrumental variable assumptions on the outcome attrition process. Under these conditions, we derive …
Persistent link: https://www.econbiz.de/10012696307
Persistent link: https://www.econbiz.de/10011399058
Persistent link: https://www.econbiz.de/10010395672
outcomes are only partially observed due to sample selection or outcome attrition. We assume sequential conditional … missing at random or instrumental variable assumptions on the outcome attrition process. Under these conditions, we derive …
Persistent link: https://www.econbiz.de/10012404583
Persistent link: https://www.econbiz.de/10012129768
Comparing earnings equations in the Panel Study of Income Dynamics (PSID) and the Current Population Survey, we find that the PSID considerably underestimates the returns to education during the 1992–2007 period. Non-random selection in the PSID sample appears to be the reason.
Persistent link: https://www.econbiz.de/10010743669
Nonrandom sample selection may render estimated treatment effects biased even if assignment of treatment is purely random. Lee (2009, Review of Economic Studies, 76: 1071–1102) proposes an estimator for treatment-effect bounds that limit the possible range of the treatment effect. In this...
Persistent link: https://www.econbiz.de/10011105654
We use data on professional chess tournaments to study how endogenous selection affects the relationship between age and mental productivity in a brain-intensive profession. We show that less talented players are more likely to drop out, and that the age-productivity gradient is heterogeneous by...
Persistent link: https://www.econbiz.de/10011190112