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Psychiatric epidemiology is one of the many paths to a career in cultural psychiatry. Psychiatric epidemiology has made numerous substantive contributions to cultural psychiatry. Areas in which psychiatric epidemiologists have contributed to cultural psychiatry include the undertaking of cross-national comparisons, studying the mental health of populations of importance to cultural psychiatry, studying risk factors that are of cultural importance such as immigration and social class, studying trauma, examining the role of stigma in cultural settings, and investigating cultural influences on mental health service delivery. This article highlights examples from the author's own research examining cross-national comparisons, trauma, and mental health service delivery. Research is vital to enable the field of cultural psychiatry to be a vibrant, evidence-based discipline within psychiatry.

3 basic criticisms of R. J. Cebula's "Local Government Policies and Migration: An Analysis for SMSA's, 1965-1970" (Public Choice, 1974, 19, Fall, 85-93) are offered: (1) it would have been more logical to use 1965 than 1971 welfare values for the period covered in the analysis, (2) since causality with respect to welfare & migration may run in both directions, migrants who moved over the 1965-70 period may have influenced welfare levels, & (3) since tax & government spending are "rather highly correlated," one of them should have been dropped from the equation or a multiequation model should have been used. A single equation estimation model taking account of these criticisms is presented, with separate results for white & black migrants, calculated for the same time period. R. J. Cebula (Emory U, Atlanta, Ga) in LOCAL GOVERNMENT POLICIES AND MIGRATION: REPLY AND EXTENSION accepts these criticisms & results as interesting & relevant. He offers a simultaneous-equation model which shows: (A) interactive effects between migration & income levels, & (B) property taxes have an effect on migration patterns. He also notes that Kohn's variables (welfare & spending) have "the same signs & essentially the same significance levels" as those in the original paper. J. N. Mayer.

When marginal environmental damages increase with emissions, it is said to be a problem for entry and exit that the marginal firm pays more in Pigouvian taxes than the actual damages it causes. Accordingly it is sometimes assumed that over the range of an individual firm's emissions, marginal environmental damages are approximately constant. When avoidance costs are added to environmental damages, however, the inequality may be reversed so that the assumption of constant marginal damages may aggravate rather than eliminate the alleged problem.