Migration as a Family Business: The Role of Personal Networks in the Mobility Phase of Migration

Formulée pour la première fois par John Salt et Jeremy Stein dans International Migration en 1997, la conception de la migration en tant qu'activité commerciale a transformé la perception de ce phénomène aussi bien auprès des spécialistes que des médias grand public. Cependant, bien que ce modèle propose un nouvel outil utile pour étudier les déplacements des individus dans le monde, sa popularité en tant que métaphore a eu pour conséquence d'occulter d'autres aspects du sujet qu'il n'arrivait pas à intégrer. Comme l'auteur cherche à le démontrer par l'analyse d'entretiens avec des migrants du Maroc et du Sénégal en Espagne et d'Egypte et du Ghana en Italie ainsi que par les profils de divers migrants aux Pays-Bas, la métaphore de l'activité commerciale n'apporte qu'une réponse partielle. Elle ne permet pas d'expliquer l'importance primordiale que revêtent pour la plupart des migrants les réseaux d'amis, de parents et de connaissances au moment d'entreprendre leur voyage.     

Early Motherhood and Long‐Term Economic Outcomes: Findings From a 30‐Year Longitudinal Study

This study examined linkages between early motherhood (before age 20) and long‐term economic disadvantage, using data from a birth cohort of 509 New Zealand‐born women followed to age 30. Associations between early motherhood and economic outcomes were examined using linear and logistic regression models and were adjusted for a range of prepregnancy factors. The findings suggested that early motherhood was associated with several indicators of economic disadvantage at age 30, including working fewer hours, welfare dependence, lower personal incomes, and exposure to economic hardship. These associations remained statistically significant even after extensive adjustment for confounding factors. These findings suggest that having a child before age 20 leads to long‐term economic disadvantage that persists for at least a decade.     

Multistage model interpretation of additive and multiplicative carcinogenic effects

Under the assumption of multistage carcinogenesis, a multiplicative carcinogenic effect would be produced by the action of different carcinogens in a mixture on different stages of the carcinogenic process. An additive effect would be produced by the effect of different carcinogens on the same stage. A mathematical argument for these hypotheses is presented here.     

The fate of the sexually abused child

This article emphasizes the importance of understanding the specific meaning of sexual abuse to the particular child in his/her particular developmental stage. A critique of the research is presented, along with discussion of the psychodynamic impact of sexual abuse on the developing ego of the child. The primary means of adaptation following the trauma are (1) identification with the aggressor and (2) the repetition compulsion. It is also suggested that Freud's seduction theory can coexist with his later fantasy theory. Two case vignettes are presented to highlight the theoretical discussion.     

Occupational pursuits of free women in early America: An examination of eighteenth-century newspapers

The revival of social and family history during the past two decades has resulted in major revisions of conventional explanations of the processes of social change. Scholarship concerning the status, roles, and contributions of early American women has been especially important in this respect. This paper is based on original findings from a systematic survey of the occupational pursuits of early American women (N=2,572) and a stratified sample (N=1,949), both derived from eighteenth-century newspaper advertisements. Our findings focus on the distribution of occupations available to women, important trends during the period, and factors contributing to changes in the occupational structure of early America.     

Exploring the link between service quality and outcomes. Parents' assessments of family support programs

Relationships among consumer-generated quality factors, satisfaction, and outcome measures were examined for family support services provided by Michigan's public mental health system. Parents focused on structural and procedural aspects of program accessibility and attended less to program administration issues. Parents who gave the services the highest quality ratings also were the most satisfied with services, saw the services as more effective, had fewer family problems, and rated their time and child-related resources as more adequate. Implications for evaluation practice are discussed.     

Aldrin and Dieldrin: A Reevaluation of the Cancer and Noncancer Dose‐Response Assessments

The dose‐response analyses of cancer and noncancer health effects of aldrin and dieldrin were evaluated using current methodology, including benchmark dose analysis and the current U.S. Environmental Protection Agency (U.S. EPA) guidance on body weight scaling and uncertainty factors. A literature review was performed to determine the most appropriate adverse effect endpoints. Using current methodology and information, the estimated reference dose values were 0.0001 and 0.00008 mg/kg‐day for aldrin and dieldrin, respectively. The estimated cancer slope factors for aldrin and dieldrin were 3.4 and 7.0 (mg/kg‐day)^?1, respectively (i.e., about 5‐ and 2.3‐fold lower risk than the 1987 U.S. EPA assessments). Because aldrin and dieldrin are no longer used as pesticides in the United States, they are presumed to be a low priority for additional review by the U.S. EPA. However, because they are persistent and still detected in environmental samples, quantitative risk assessments based on the best available methods are required. Recent epidemiologic studies do not demonstrate a causal association between aldrin and dieldrin and human cancer risk. The proposed reevaluations suggest that these two compounds pose a lower human health risk than currently reported by the U.S. EPA.     

The partial least squares-fix point method of estimating interdependent systems with latent variables

This paper describes a method for estimating the unknown parameters of an interdependent simultaneous equations model with latent variables. For each latent variable there may be single or multiple indicators. Estimation proceeds in three stages: first, estimates of the latent variables are constructed from the associated manifest indicators; second, treating the estimates as directly observed, fix-point estimates of the structural form parameters are obtained; third, the location parameters are estimated. The method involves only repeated application of ordinary least squares and no distributional assumptions are needed. The paper concludes with an empirical application of the method.