Antagonists in Mutual Antipathies: A Person‐Oriented Approach

This study investigated the heterogeneity of mutual antipathy relationships. Separate cluster analyses of peer interactions of early adolescents (mean age 11 years) and adolescents (mean age of 14) yielded 3 types of individuals in each age group, namely Prosocial, Antisocial, and Withdrawn. Prevalence analysis of the 6 possible combinations of types of individuals constituting mutual antipathy dyads yielded antipathy dyad types. The majority of these dyads consisted of a combination of 2 dissimilar types of individuals. Implications of the high prevalence of the Antisocial–Withdrawn antipathy dyad type are discussed.     

A Dynamic Approach to the Determinants of Immigrants’ Language Proficiency: The United States, 1980–20001

This article proposes a dynamic perspective on immigrants’ language proficiency. Hypotheses are formulated about immigrants’ language skills at arrival and about the speed with which immigrants learn the language thereafter. It pools data from the 1980, 1990, and 2000 U.S. Censuses, and uses a synthetic cohort design to analyze the language skills of immigrants within the first 20 years after migration. Multilevel models show that higher educated immigrants arrive with better language skills and learn the language quicker. Group size has a double‐negative effect: it attracts less skilled immigrants, and it hampers language learning. These and other determinants are discussed in light of current research on immigrants’ second‐language proficiency.     

The process of value realization in asymmetric new venture development alliances: Governing the transition from exploration to exploitation

Based on a case study of three asymmetric new venture development (ANVD) alliances, we examine the governance of transitions from exploration to exploitation. We propose that role deficiencies, technological asymmetry, and the presence of a separate venture unit at established firms constitute important initial conditions influencing value realization in ANVD alliances. We further show that role-specific investments act as more appropriate mechanisms than contractual incentives to govern transitions from exploration to exploitation. Jointly, these findings provide new insights into the impact of structural and relational governance mechanisms on value creation in interfirm relationships.     

Iterative regularisation in nonparametric instrumental regression

This paper considers the nonparametric regression model with an additive error that is correlated with the explanatory variables. Motivated by empirical studies in epidemiology and economics, it also supposes that valid instrumental variables are observed. However, the estimation of a nonparametric regression function by instrumental variables is an ill-posed linear inverse problem with an unknown but estimable operator. We provide a new estimator of the regression function that is based on projection onto finite dimensional spaces and that includes an iterative regularisation method (the Landweber–Fridman method). The optimal number of iterations and the convergence of the mean square error of the resulting estimator are derived under both strong and weak source conditions. A Monte Carlo exercise shows the impact of some parameters on the estimator and concludes on the reasonable finite sample performance of the new estimator.     

The effects of measurement error and omitted variables when using transition matrices to measure intergenerational mobility

This paper examines the consequences of specification error when transition matrices are used to analyse patterns of intergenerational mobility. We show that classical measurement error in both the child’s and parent’s earnings can lead to biased results, with summary mobility measures biased by as much as 20% in some cases. Furthermore our results suggest that the extent of the bias is most severe in the tails of the distribution. Omitted conditioning variables appear to have a modest effect on transition matrices in our model.     

A comparative perspective on intermarriage: Explaining differences among national-origin groups in the United States

Little is known about the validity of group-level theories of ethnic intermarriage despite the fact that such theories are often invoked in explaining why certain ethnic groups are “closed,” whereas others are relatively “open.” We develop a comparative perspective by analyzing the marriage choices of 94 national-origin groups in the United States, using pooled data from the Current Population Surveys, 1994–2006, and multilevel models in which individual and contextual determinants of intermarriage are included simultaneously. Our analyses show large differences in endogamy across groups. After taking compositional effects into account, we find that both structural and cultural group-level factors have significant effects on endogamy. Cultural explanations (which focus on the role of norms and preferences) play a more important role than structural explanations (which focus on meeting and mating opportunities). Our results reinforce the common but untested interpretation of endogamy in terms of group boundaries.     

Goodness-of-fit tests for parametric regression with selection biased data

Consider the nonparametric location-scale regression model Y=m(X)+σ(X)ε$Y=m(X)+\sigma (X)\epsilon$, where the error ε$\epsilon$ is independent of the covariate X$X$, and m$m$ and σ$\sigma$ are smooth but unknown functions. The pair (X,Y)$(X,Y)$ is allowed to be subject to selection bias. We construct tests for the hypothesis that m(·)$m(·)$ belongs to some parametric family of regression functions. The proposed tests compare the nonparametric maximum likelihood estimator (NPMLE) based on the residuals obtained under the assumed parametric model, with the NPMLE based on the residuals obtained without using the parametric model assumption. The asymptotic distribution of the test statistics is obtained. A bootstrap procedure is proposed to approximate the critical values of the tests. Finally, the finite sample performance of the proposed tests is studied in a simulation study, and the developed tests are applied on environmental data.     

Immigration and living arrangements: Moving beyond economic need versus acculturation

Prior research seeking to explain variation in extended family coresidence focused heavily on the potentially competing roles of cultural preferences and socioeconomic and demographic structural constraints. We focus on challenges associated with international immigration as an additional factor driving variation across groups. Using 2000 census data from Mexico and the United States, we compare the prevalence and age patterns of various types of extended family and non-kin living arrangements among Mexican-origin immigrants and nonimmigrants on both sides of the U.S.-Mexico border. Additionally, we use the Survey of Income and Program Participation to examine the stability of extended family living arrangements among Mexican-origin immigrants and natives in the United States. We find that newly arrived immigrants to the United States display unique patterns in the composition and stability of their households relative to nonimmigrants in both Mexico and the United States. Recent immigrants are more likely to reside in an extended family or non-kin household, and among those living with relatives, recent immigrants are more likely to live with extended family from a similar generation (such as siblings and cousins). Further, these households experience high levels of turnover. The results suggest that the high levels of coresidence observed among recently arrived Mexican immigrants represent a departure from “traditional” household/family structures in Mexico and are related to the challenges associated with international migration.     

Police encounters among a community sample of children and youth accessing mental health services

Generally, within the Canadian context, scholarship on police encounters with persons living with mental illness has focused on the experiences of adults and not children and youth. In this article, we present preliminary work of a secondary data analysis of intake statistics collected over a 5-year period (2009–2014) and a thematic content analysis of qualitative intake notes collected over a 2-year period (2009–2011) about police involvement among a community sample of children and youth accessing mental health services. Of 8,920 intakes completed, 1,449 children and youth, birth to 24 years old, had had police involvement at the time of accessing mental health services. Over the 5 years, the average number of young people with police involvement at the time of accessing mental health services was 16%, or one in six children and youth. Analysis of the qualitative intake notes revealed two main reasons for police involvement: (1) support in the home for a distressed child, and (2) concerns about a child’s conduct and behaviors in the community. The implications for social work practice and future research are discussed.