Union wage differentials for covered members and nonmembers in Great Britain

I present the first longitudinal estimates of covered union member and covered nonmember wage differentials in Great Britain. Crosssectional estimates show that covered union members receive a premium of about 10 percent over other workers, but covered nonmembers have no significant wage differential. Longitudinal estimates that accounted for fixed effects, selectivity, and measurement error indicated that OLS estimates are downward biased. The “true” union wage differential is likely about 30–35 percent. There is a large negative selection effect to union membership. No robust estimate could be found for covered nonmembers. This paper has benefited from conversations with Martyn Andrews, Wiji Arulampalam, Alison Booth, Tim Hatton, John Hutton, George Jakubson, Costas Meghir, and Andrew Oswald. Alison Booth kindly made extensive comments on an earlier draft, which greatly improved the exposition. John Budd, Hank Farber, and Larry Katz directed me towards related work in the U.S. I am also grateful to seminar participants at the University of York University of Essex, and the CEPR Workshop on Labour Market Issues. Thanks to the ESRC Data Archive for supplying the Family Expenditure Survey (FES) data. All data, computer programs, and results alluded to in the text are available on request. The British Household Panel Study (BHPS) and FES data are available from the ESRC Data Archive at the University of Essex. The Panel Study of Manufacturing Establishments (PSME) data are available from the author on request.     

Jugend, Politik und Vertrauen: Ein Beitrag zur Bedeutung von Vertrauen für das politische Handeln Jugendlicher

Discussions concerning low trust scores in politics and politicians (both refer to a lack of political interest and activity), increasingly focus attention on how, in particular, adolescents relate trust to political activity. Younger people are said to show a lack of political interest. Nevertheless empirical studies about the determinants of missing political commitment and about the combination of trust and political action are extremely rare. Therefore, this empirical study focuses on the impact of trust on juveniles‘ political involvement. The question which characteristics trustworthy politicians must have in adolescents‘ eyes, and if relevant interindividual differences do exist, is of special regard.     

Failings in U.K. transport planning

This discussion of British Government policy on transport, highlights the absence of a coherent strategic plan as a guideline for individual decision-making. Without this framework and a recognition of the close connection between transport and land use planning, conventional methods of project appraisal produce an unsatisfactory piecemeal transport system. As an example, the 1973 Channel Tunnel proposals are examined and found inappropriate for either of the main possible directions of progress sketched out.     

Contraceptive determinants in three leading countries

The purpose of this paper is to examine the relative importance of access to family planning and the motivation to restrict fertility in determining contraceptive use in three countries that have led the fertility transitions in their regions: Colombia, Tunisia, and Zimbabwe. A structural equations model is estimated where endogenous fertility intentions are allowed to affect contraceptive method use. Simulation methods are then used to quantify the size of the impact of intentions and access on method choice for the three countries. The results demonstrate that even after controlling for fertility intentions, family planning program variables still have important effects in all three countries.     

Estimation of scale parameters in mixture distributions

Simultaneous estimation of scale parameters is considered in mixture distributions under squared-error loss. A general class of estimators is obtained which dominates the componentwise best multiple estimators and the moment estimators. As special cases, improved estimators are obtained for the multivariate t-distribution and the p-variate Lomax distribution.     

How Does the General Public Evaluate Risk Information? The Impact of Associations with Other Risks

There is a considerable body of knowledge about the way people perceive risks using heuristics and qualitative characteristics, and about how risk information should be communicated to the public. However, little is known about the way people use the perception of known risks (associated risks) to judge an unknown risk. In a first, qualitative study, six different risks were discussed in in-depth interviews and focus group interviews. The interviews showed that risk associations played a prominent role in forming risk perceptions. Associated risks were often mentioned spontaneously. Second, a survey study was conducted to confirm the importance of risk associations quantitatively. This study investigated whether people related unknown risks to known risks. This was indeed confirmed. Furthermore, some insight was gained into how and why people form risk associations. Results showed that the semantic category of the unknown risks was more important in forming associations than the perceived level of risk or specific risk characteristics. These findings were in line with the semantic network theory. Based on these two studies, we recommend using the mental models approach in developing new risk communications.     

Effects of Race and Sex on Work Group Cooperation Vs. Competition

This study examines whether differences in individualism-collectivism by race and sex result in differences in cooperation vs. competition. Expanding upon the earlier work of Cox et al., individual and group-level comparisons are made by race and sex. Exclusively examining race-based effects, Cox et al. had suggested that blacks display greater cooperation than do whites. Our findings concur; however, we are able to demonstrate this using a more complete group-level comparison. Given literature suggesting sex to be as relevant as race when administering work force diversity, we further expanded upon the earlier study by testing for such effects. While some previous research has suggested a tendency for women to behave more cooperatively than do men, our findings show that this is not necessarily the case. Specifically, this study demonstrates that sex decreases in importance, when controlling for race. Applications and suggestions for future research are presented.