Generalized log-gamma regression models with cure fraction

In this paper, the generalized log-gamma regression model is modified to allow the possibility that long-term survivors may be present in the data. This modification leads to a generalized log-gamma regression model with a cure rate, encompassing, as special cases, the log-exponential, log-Weibull and log-normal regression models with a cure rate typically used to model such data. The models attempt to simultaneously estimate the effects of explanatory variables on the timing acceleration/deceleration of a given event and the surviving fraction, that is, the proportion of the population for which the event never occurs. The normal curvatures of local influence are derived under some usual perturbation schemes and two martingale-type residuals are proposed to assess departures from the generalized log-gamma error assumption as well as to detect outlying observations. Finally, a data set from the medical area is analyzed.     

Exceptional contributions to US science by the foreign-born and foreign-educated

This paper contributes to the debate on high-skilled migration byexamining whether the foreign-born and foreign-educated are disproportionatelyrepresented among individuals making exceptional contributions to science and engineering (S & E) in the U.S. Six indicators of scientific achievement areused: individuals elected to the National Academy of Sciences and/or National Academy of Engineering, authors of citation classics, authors of hot papers, the 250 most-cited authors, authors of highly cited patents, and scientistswho have played a key role in launching biotechnology firms. We do not claim that this list is exhaustive, merely illustrative. Using a variety of sources, we are able to determine the birth andeducational origin of 89.3% of the study group of over 4,500 scientists and engineers. For each indicator of scientific achievement, we test to see if the observed frequency by birth (or educational) origin is significantly differentfrom the frequency one would expect given the composition of the scientific labor force in the U.S. We find that although there is some variation by discipline, individuals making exceptional contributions to S & E in the U.S. aredisproportionately drawn from the foreign born. Only in the instance of hot papers in the life sciences were we unable to reject the null hypothesis that the proportion is the same as that in the underlying population. The most frequent country of origin in the life sciences is Great Britain followed by Germany. In the physical sciences the reverse is true. We also find that individuals making exceptional contributions are, in many instances, disproportionately foreign educated, both at the undergraduate and at the graduate level. We conclude that immigrants have been a source of strength and vitalityfor U.S. science and, on balance, the U.S. appears to have benefited from the educational investments made by other countries. We do not investigate, however, whether U.S. scientists and engineers have borne part of thecost of the inflow of foreign talent by being displaced from jobs and/or earning lower wages. Nor do we investigate the cost to the countries of origin.     

African American and European American Women's Marital Well‐Being

Using a sample of 247 African American and European American women in their 3rd year of marriage, this study compared the predictors of marital well‐being for each group by focusing on the influences of individual, interpersonal, and social and economic resources. Regression analyses revealed that emotional health (individual), trusting one's spouse (interpersonal), and feeling underbenefited in the relationship (interpersonal) were significant predictors of marital well‐being for both groups of women. Physical health (individual) and in‐law relations (social and economic), however, affected the marital well‐being of only African American women. Findings from this study suggest the need to examine marital well‐being within the context of race.     

Assessing Depression in Childhood and Adolescence: A Guide for Social Work Practice

Depression is relatively common in children and adolescents, and if left undetected and untreated, can have long-term negative consequences. Social workers providing services to families, children and adolescents need to understand the characteristics, and conduct developmentally appropriate assessments, of depressive symptoms. This paper provides a review of current literature related to the definition, prevalence, co-occurrence, and measurement of depression in childhood and adolescence. It also highlights relevant gender, race, and ethnic influences.     

Classification of Poverty Condition Using Natural Language Processing

Social Indicators Research - This work introduces a methodology to classify between poor and extremely poor people through Natural Language Processing. The approach serves as a baseline to...     

Intertwining Gender Inequalities and Gender‐neutral Legitimacy in Job Evaluation and Performance‐related Pay

This article analyses the intertwining inequalities in wage determination and the gender‐neutral legitimacy that pay systems provide by masking these inequalities. Job evaluation and performance‐related pay were originally designed for purposes other than promoting equal pay, namely as managerial tools for determining wage levels. Typically, the main objective of a pay system is not to promote equal pay. Still, as a tool for assessing the value of work, job evaluation is regarded as a central method in promoting equal pay. The use of job evaluation is recommended by the European Commission and the International Labour Organization, and often features in gender‐equality policy and legislation. In contrast with the status of job evaluation, little research exists on performance‐related pay and gender pay equity. The findings show that the wages determined by pay systems reflect gendered cultural valuations of jobs and occupations. Pay systems provide gender‐neutral legitimacy for gender‐based wage disparities.     

Measuring fertility norms

We argue that social norms must be measured at the group level of analysis, allow for a range of acceptable behaviors, and be linked to the individual level of analysis to explain social behavior. From a survey of young adults in Wisconsin (1973), we generated measures of family size norms from sibship experience and friends' expected family size. These measures satisfied our primary criterion for a social norm: Those with non-normative family size desires tended to shift expectations toward the norm. The analyses demonstrate the difficulty of estimating normative effects when by its very definition a norm is expected to restrict variation in human behavior.Revision of a paper presented at the annual meetings of the American Sociological Association, New York, New York, August 30–September 3, 1986. This research was supported by Grant 1-R01-HD-17190 and by Center Grant HD05876 from the Center for Population Research, NICHHD. Paula Goldman's work was supported by Training Grant 5732HD07014 from the same source.     

Welfare, work, and changes in mothers’ living arrangements in low-income families

Data from a two-wave survey of low-income families in Boston, Chicago, and San Antonio are used to replicate recent reports of a modest increase in the number of low-income children living in two-adult families and to analyze the increase. We find that most of the increase occurred through the addition of a man other than the biological father to the household and that more of it occurred through cohabitation than through marriage. Moreover, across the two waves, cohabiting and marital unions were highly unstable. We review research on stepfamilies and on instability in children’s living arrangements, and we conclude that the kinds of two-adult families being formed in these low-income central-city neighborhoods may not benefit children as much as policy-makers hope. In addition, we investigate the associations between marital and cohabiting transitions, on the one hand, and transitions into and out of Temporary Assistance to Needy Families (TANF) receipt, employment, and Earned Income Tax Credit (EITC) usage between the two waves on the other. We find that marital transitions are related to TANF and employment transitions but that cohabiting transitions are not. We suggest that low-income mothers may view marriage as more of an economic partnership than cohabitation and may expect more of an economic contribution from a husband than from a cohabiting partner.