The ties that bind: the role of migrants in the uneven geography of international telephone traffic

Recent work suggests that migrants have been a major driving force in the dramatic growth of international telephony over recent decades, accounting for large rises in telephone calls between countries with strong immigrant/emigrant connections. Yet, the existing literature has done a poor job of evaluating the substantive importance of migrants in explaining large disparities in levels of bilateral voice traffic observed between different countries. It has also failed to go very far in examining how domestic and relational factors moderate (namely amplify or attenuate) the influence of migrant stocks on international calling. Our contribution addresses these gaps in the literature. For a sample, which includes a far larger number of countries than previous studies, we show that, together with shorter‐term visitors, bilateral migrant stocks emerge as the relational variable with one of the substantively largest influences over cross‐national patterns of telephone calls. We also find that the effect of bilateral migrant stocks on inter‐country telephone traffic is greater where the country pairs are richer and more spatially distant from one another.     

Research on Environmental Health Interventions: Ethical Problems and Solutions

This article reviews a variety of ethical issues one must consider when conducting research on environmental health interventions on human subjects. The paper uses the Kennedy Krieger Institute lead abatement study as well as a hypothetical asthma study to discuss questions concerning benefits and risks, risk minimization, safety monitoring, the duty to warn, the duty to report, the use of control groups, informed consent, equitable subject selection, privacy, conflicts of interest, and community consultation. Research on environmental health interventions can make an important contribution to our understanding of human health and disease prevention, provided it is conducted in a manner that meets prevailing scientific, ethical, and legal standards for research on human subjects.     

Orthogonalized Residuals for Estimation of Marginally Specified Association Parameters in Multivariate Binary Data

Abstract. This paper focuses on marginal regression models for correlated binary responses when estimation of the association structure is of primary interest. A new estimating function approach based on orthogonalized residuals is proposed. A special case of the proposed procedure allows a new representation of the alternating logistic regressions method through marginal residuals. The connections between second‐order generalized estimating equations, alternating logistic regressions, pseudo‐likelihood and other methods are explored. Efficiency comparisons are presented, with emphasis on variable cluster size and on the role of higher‐order assumptions. The new method is illustrated with an analysis of data on impaired pulmonary function.     

Un-charted Territory? Experiences of the Purchaser/Provider Split in Local Authority Children's Services

¹Ian Kirkpatrick Public Services Research Unit. Cardiff Business School, Aberconway Building, Colum Road, Cardiff CF1 3EU, UK. Summary A primary goal of Conservative government policy, expressedin the 1990 National Health Service and Community Care Act,was to encourage the development of market mechanisms throughthe separation of purchaser and provider roles. The main targetfor reform was to be adult services although, in the absenceof specific guidance, a number of local authorities also implementedpurchaser/provider structures in services for children and families.To date, little attention has been given in the literature eitherto describing what purchaser/provider structures involve inthis context or to assessing their impact. Drawing on case studydata from seven local authorities, this article seeks to addressthese deficiencies. It is argued that many changes have beencosmetic and that, while it is not possible to evaluate thelong-term effectiveness of the model, there is evidence thatit can have some negative consequences for the co-ordinationand delivery of services.     

The Impact of "No Opinion" Response Options on Data Quality: Non-Attitude Reduction or an Invitation to Satisfice?

According to many seasoned survey researchers, offering a no-opinionoption should reduce the pressure to give substantive responsesfelt by respondents who have no true opinions. By contrast,the survey satisficing perspective suggests that no-opinionoptions may discourage some respondents from doing the cognitivework necessary to report the true opinions they do have. Weaddress these arguments using data from nine experiments carriedout in three household surveys. Attraction to no-opinion optionswas found to be greatest among respondents lowest in cognitiveskills (as measured by educational attainment), among respondentsanswering secretly instead of orally, for questions asked laterin a survey, and among respondents who devoted little effortto the reporting process. The quality of attitude reports obtained(as measured by over-time consistency and responsiveness toa question manipulation) was not compromised by the omissionof no-opinion options. These results suggest that inclusionof no-opinion options in attitude measures may not enhance dataquality and instead may preclude measurement of some meaningfulopinions.     

'She Has Different Fits to Me': how people with learning difficulties see themselves

People with learning difficulties often appear to experience significant incongruence between their categorical identity as someone with learning difficulties and their self-identity. This paper draws on research undertaken with 60 young adults, and their parents or carers to examine the nature of that incongruence. We conclude that it is based almost entirely in discursive relationships, whereas experiential and power relationships promote incorporation of categorical identity into self-identity. We call for more careful consideration and open discussion of the ways in which the categorical identity of people with learning difficulties is handled in discursive relations with them.     

PRIVATE MATERIALISM, PERSONAL SELF-FULFILLMENT, FAMILY LIFE, AND PUBLIC INTEREST THE NATURE, EFFECTS, AND CAUSES OF RECENT CHANGES IN THE VALUES OF AMERICAN YOUTH

From the early seventies through 1986–87, private materialismas a life goal increased greatly in importance among Americanyouth, goals relating to family life increased somewhat, publicinterest concerns diminished modestly, and the goal of personalself-fulfillment declined sharply. Accompanying this shift invalues was a change in young people's college majors and careerplans toward those leading to higher paying jobs and a markedincrease in the attractiveness of working in large corporations.Jobs offering money and status became more preferred relativeto those with opportunities for self-fulfillment or public service.Support grew for capitalist institutions such as profit makingand advertising. At the same time, there was a retreat frompolitical involvement, and a conservative shift in politicalbeliefs. Explanations of the shift in values in terms of theimpact on the young of major political and social events orthe emergence of a feeling of economic insecurity among theyoung are not supported by the evidence. Nor are a number ofhypotheses relating to changes in young people's family structureor social ization experience. The shift in values of the youngdoes, how ever, apparently correspond to a similar change inthe values of adults generally and, thus, may reflect changesin the values transmitted to young people as they were growingup. We specu late that the shift in values among adults was,in turn, caused by a growing feeling of economic deprivationin the post-1973 period as real wage rates declined and materialaspirations continued to rise. In the last few years, the shiftin the life goals of the young appears to have ended and mayeven have started to reverse, but young people today are stillmuch different from those 15 years ago.     

POVERTY AND ECONOMIC GROWTH: TRICKLE DOWN PETERS OUT

Previous studies have found that economic growth tends to "trickle down" to poor families. This study investigates whether use of a relative definition of poverty eliminates the impact of economic growth on the incidence of poverty of various demographic groups and whether a decrease in the impact of growth has occurred since 1964. With the exception of families with male heads, economic growth no longer affects poverty irrespective of whether a relative or absolute definition of poverty is used. Our findings indicate that the contribution of growth has been overstated, that much of the past success has been illusory, and that poverty will be more intractable in the future.