The future course of old-age mortality is of great importance to public sector expenditures in countries where old-age programs account for large fractions of the public budget. This paper argues that the competitive market prices of mortality contingent claims, such as annuities and life...

Empirical researchers commonly invoke instrumental variable (IV) assumptions to identify treatment effects. This paper considers what can be learned under two specific violations of those assumptions: contaminated and corrupted data. Either of these violations prevents point identification, but...

Data on 2,822 Vanderbilt University graduates are used to investigate alumni giving behavior during the eight years after graduation. A two stage model accounting for incidental truncation is used to first estimate the likelihood of making a contribution and second estimate the average gift size...