Sharp Identification Regions in Models With Convex Moment Predictions

We provide a tractable characterization of the sharp identification region of the parameter vector θ in a broad class of incomplete econometric models. Models in this class have set‐valued predictions that yield a convex set of conditional or unconditional moments for the observable model variables. In short, we call these models with convex moment predictions. Examples include static, simultaneous‐move finite games of complete and incomplete information in the presence of multiple equilibria; best linear predictors with interval outcome and covariate data; and random utility models of multinomial choice in the presence of interval regressors data. Given a candidate value for θ, we establish that the convex set of moments yielded by the model predictions can be represented as the Aumann expectation of a properly defined random set. The sharp identification region of θ, denoted Θ_I, can then be obtained as the set of minimizers of the distance from a properly specified vector of moments of random variables to this Aumann expectation. Algorithms in convex programming can be exploited to efficiently verify whether a candidate θ is in Θ_I. We use examples analyzed in the literature to illustrate the gains in identification and computational tractability afforded by our method.     

Meeting immigrant health challenges: An integrated model in New York City

New York City has traditionally been the portal to America for millions of foreign‐born immigrants. Current immigration echoes this past. Each year, tens of thousands of immigrants and migrants enter New York City. These individuals and families come from diverse cultures and health care systems which continue to impact on their health care needs. How can New York's health care system provide culturally sensitive and epidemiologically informed health services to these immigrants? In 1990, with a grant from the Aaron Diamond Foundation, an interdisciplinary group of professionals established the New York Task Force on Immigrant Health. This paper will describe the work of this unique multi‐disciplinary organisation as it seeks to address issues of health status and service delivery to immigrant populations. The paper will discuss specific issues and strategies with respect to a) the development of data bases, b) ethnographic investigations, c) cross‐cultural and structural barriers to care, d) the creation and analysis of models to integrate traditional and Western bio‐technical health care, and e) the informing and transforming of public policy and programs to result in more linguistically appropriate, culturally sensitive and effective health and social services. The successes of the New York Task Force on Immigrant Health, in a relatively brief period of time, provide both a model and a stimulus for other localities and nation‐states interested in preventing illness and improving the health status of their diverse populations.     

New Methods for Describing What People Think*

Sociological research on what people think has been hampered by inadequate methods. These inadequacies are illustrated by Coleman's survey research and Burner's participant observation study. The ethnoscience approach in anthropology is developing improved methods for studying cognitive content, and the usefulness of these methods is illustrated by research on (1) wedding ceremonies, (2) kinship terminology and (3) norms and social change.     

From Theory to Implementation: intercultural education in Italian schools

This article examines the gap existing between the de jure and the de facto situation of im/migrant children in Italian schools. Basing our comments on the specific pedagogical expertise and activities of CD/LEI (Centro di Documentazione/Laboratorio per una Educazione Interculturale — Research/Documentation Centre on Intercultural Education), an inter‐institutional organization operative in Bologna, we will discuss ways of creating a multicultural learning environment, in order to address more effectively the educational needs of im/migrant pupils in Italy.

The major findings of a book, recently published by the founder of CD/LEI and two colleagues are also presented. The book, entitled Dall'accoglienza alia Convivenza (From the Reception of Im/migrants to an Intercultural Society), is intended as a working tool for heads, teachers and school staff in primary and secondary schools in Italy.     

When is the Second One Coming? The Effect of Couple’s Subjective Well-Being Following the Onset of Parenthood

Parenthood has strong effects on people’s life. Some of these effects are positive and some negative and may influence the decision of having other children after the first. Demographic research has only marginally addressed the relationship between subjective well-being and fertility, and even less attention has been reserved to investigate how the subjective experience of the first parenthood may influence the decision to have a second child. Performing log-logistic hazard models using HILDA panel data (2001–2012), changes in couples’ objective life conditions and satisfaction within family and work domains after the first childbirth are related to the timing of the transition to the second parenthood. Results show that partners adopting traditional gender specialization in roles proceed quicker to the second child; however, experiencing dissatisfaction in reconciling, in the couple’s relationship and in the work domain negatively affects mothers’ probability of having a second child in the future.     

Accounting for uncertainty in the historical response rate of the standard treatment in single‐arm two‐stage designs based on Bayesian power functions

In phase II single‐arm studies, the response rate of the experimental treatment is typically compared with a fixed target value that should ideally represent the true response rate for the standard of care therapy. Generally, this target value is estimated through previous data, but the inherent variability in the historical response rate is not taken into account. In this paper, we present a Bayesian procedure to construct single‐arm two‐stage designs that allows to incorporate uncertainty in the response rate of the standard treatment. In both stages, the sample size determination criterion is based on the concepts of conditional and predictive Bayesian power functions. Different kinds of prior distributions, which play different roles in the designs, are introduced, and some guidelines for their elicitation are described. Finally, some numerical results about the performance of the designs are provided and a real data example is illustrated. Copyright © 2016 John Wiley & Sons, Ltd.     

Access to Childcare Services: The Role of Demand and Supply-Side Policies

Different demand-side or supply-side instruments can be used in order to encourage the use of formal childcare. With the budgetary constraints of the last two decades, some countries have changed their childcare policy leading to the implementation of demand-side rather than supply-side instruments. The introduction of demand-side subsidies to encourage the use of formal childcare services was a major change in Belgium since, until 1988, subsidies were directly granted to childcare services providers in order to reduce their running costs. The purpose of this paper is to analyze the impact of both demand-side and supply side subsidies on the use of formal childcare by low-income families. From this perspective, we analyzed, on the one hand, the effect of the tax deduction instrument implemented in Belgium and, on the other hand, the effect of an increase in the provision of childcare places on the use of formal childcare services. We found that the choice of policy instruments is not neutral in terms of access to formal childcare for families belonging to different income groups. Indeed, while a higher supply of childcare places increases the probability of access for low-income families, the tax deduction can have a mixed outcome as far as access to childcare is concerned.     

Black Edens,country Eves: Listening,performance, and black queer longing in country music

ABSTRACT

This article explores Black queer country music listening, performance, and fandom as a source of pleasure, nostalgia, and longing for Black listeners. Country music can be a space for alliance and community, as well as a way of accessing sometimes repressed cultural and personal histories of violence: lynching and other forms of racial terror, gender surveillance and disciplining, and continued racial and economic segregation. For many Black country music listeners and performers, the experience of being a closeted fan also fosters an experience of ideological hailing, as well as queer world-making. Royster suggests that through Black queer country music fandom and performance, fans construct risky and soulful identities. The article uses Tina Turner's solo album, Tina Turns the Country On! (1974) as an example of country music's power as a tool for resistance to racial, sexual, and class disciplining.     

Patterns of evolutions of social enterprises in France: a focus on work integration social enterprises

The objective of this paper is to characterize the patterns of emergence and evolution of social enterprise in France with a focus on work integration social enterprises (WISEs). After a review of the history of social and solidarity economy practices, identifying the processes that brought these practices to develop, we discuss the boundaries of the notion of social enterprise in the French case. We then briefly present the historical evolution of work integration. On that basis, two models of social enterprise applied to the case of work integration are extracted, crystallizing crucial tendencies. The limits and prospects of social enterprise in the field of work integration in France are discussed in the conclusion.     

Children of Exception: Redefining Categories of Illegality and Citizenship in Canada

This article examines legal discourses on precarious status children in Canada over the last decade. Drawing on different theoretical frameworks and taking into account laws and court decisions, the paper will examine the way in which precarious status children are regarded as powerless subjects in need of protection and as threatening others. The article argues that these two apparently contrasting discourses are embedded within specific socio‐historical constructions of childhood and children's citizenship which deny and limit their agency and conceive of their claim to membership as illegitimate. In the case of precarious status children, illegality and citizenship need to be redefined in a developmental perspective, questioning the potential risks associated with prevalent moral and social assumptions on childhood.