Survey research consistently reports a positive association between educational attainment and socially tolerant attitudes, but critics hold that respondents with high levels of education may simply purport to hold attitudes seen as socially desirable. In this article, we seek to adjudicate...

Research on the effects of Vietnam military service suggests that Vietnam veterans experienced significantly higher mortality than both non-Vietnam veterans and the civilian population at large. These results, however, may be biased by non-random selection into the military if unobserved...

Research on the effects of Vietnam military service suggests that Vietnam veterans experienced significantly higher mortality than both non-Vietnam veterans and the civilian population at large. These results, however, may be biased by non-random selection into the military if unobserved...