Wages, earnings, and occupational status: did World War II veterans receive a premium?

Over 16 million men served during World War II (WWII), and we know that veterans obtained more education and earned higher incomes than did non-veterans and that these premiums were more substantial for Blacks and less educated men. However, we know very little about the reasons for such veteran premiums. Using several distinct, yet connected, theoretical traditions that have been used to link military service to subsequent outcomes—theories of the life course, the status attainment perspective, relatively new conceptualizations of social capital, economic theories of human capital, and theories of selectivity—we seek to redress this lack of understanding. We use survey data from the National Longitudinal Study of Mature Men (NLSMM) to examine the long-term effects of military service during WWII on occupational and income attainments. We find that the effects associated with being a veteran of WWII are modest and are mostly limited to less advantaged veterans, and can be largely explained by differences in human capital investment or selectivity. The one finding that cannot be explained by differences in family background, human capital investments, and selectivity is a higher hourly wage rate associated with being a Black veteran.     

Quality of Parenting as Mediator of the Effect of Childhood Defiance on Adolescent Friendship Choices and Delinquency: A Growth Curve Analysis

Social scientists agree that childhood antisocial behavior portends adolescent delinquency, but there is little agreement regarding the theoretical processes that account for this behavioral continuity. Latent growth curve modeling was used to test latent trait and social influence explanations for this association. The analyses used data collected annually over a 4‐year period from a sample of 149 boys, 157 girls, and their parents. Contrary to latent trait theories, we found no direct association between oppositional/defiant behavior during childhood and a trajectory of increasing involvement with deviant peers and delinquency during adolescence. Rather, early oppositional/defiant behavior undermined effective parenting practices. The latter, in turn, predicted an increasing affiliation with deviant peers and delinquency during adolescence. Improvements in parenting during adolescence decreased delinquency indirectly by reducing affiliation with deviant peers. Overall, the results support a life course development model in which difficult behavior during childhood increases the probability of adolescent deviant behavior because of its disruptive effect on quality of parenting.     

Latent Models of Family Processes in African American Families: Relationships to Child Competence,Achievement, and Problem Behavior

This study explored the assessment of family processes for a sample of African American kindergarten children, parents, and teachers involved in the EARLY ALLIANCE prevention trial. Using modified versions of the Family Assessment Measure, the Family Adaptability and Cohesion Evaluation Scales, the Family Beliefs Inventory, and the Deviant Beliefs measure, internal consistency analyses along with exploratory and confirmatory factor analyses provided empirical support for a Cohesion factor (cohesion and communication), a Structure factor (support and organization), a Beliefs factor (on family purpose and child development), and a Deviant Beliefs factor. Regression analyses examined the relationship of these measures of family processes to child social and academic competence, problem behavior, and early reading achievement. Family Structure (support and organization) was consistently related to parent‐ and teacher‐reported competence and behavioral outcomes, providing support for this construct as an important aspect of family process. Family Cohesion and communication, along with Beliefs, were also related to youth competence and behavior. None of the family process variables added a unique contribution to the influence upon achievement for these kindergarten children beyond the role of parental education and income. This work begins to examine specific dimensions of family processes and their relationships to important adaptive and less adaptive child outcomes. Other dimensions may be identified and examined in future research with families of color.     

Assigning students to academic majors

We address here the problem of assigning undergraduate students to academic major areas at a Middle-Eastern business school, which is quite different from what one usually faces in the West. Our formulation considers the student's preference in the light of his/her performance in certain bellwether courses and various practical constraints in arriving at an initial solution. We present a linear program that maximizes the overall value of the assignments to the students as well as the academic units concerned. We show through a real example how this approach has been implemented as one step in the major-assignment process.     

Re-thinking economic development in peripheral regions

Economic development in peripheral or non-urban spaces has long been characteristic of so-called ‘branch plant’ and ‘back office’ economies. This conclusion has been premised on the explanatory potential of the product cycle model (PCM). The PCM suggests preliminary product and process innovations occur in core urban areas. Under that model, the diffusion of economic activities across space occurs only when the production process has been streamlined and routinized. Additionally, the geographic concept of spatial agglomeration has underscored the explanatory account of the PCM. In concert, the PCM and agglomeration illustrate the urban or core bias of traditional economic geography. This paper will reconsider regional development in peripheral areas within the context of an emerging new economic geography. Several themes of new economic geography, including the role of the state, the spatial division of labor, producer services, information technologies, and amenities, will be used to construct a proposed cumulative framework.     

Timing of Parental Separation and Attachment to Parents in Adolescence: Results of a Prospective Study from Birth to Age 16

Using prospective longitudinal data from the Christchurch Health and Development Study (CHDS), this paper examines the effects of parental separation on the quality of adolescents' attachment to parents and their perceptions of parental care and overprotection during childhood. Exposure to parental separation was significantly associated with lower attachment to parents in adolescence and more negative perceptions of maternal and paternal care and protection during childhood. When examined in relation to the developmental timing of first separation, a linear relationship between the age at first separation and later parental attachment and perceived parent–child relations was found. The younger the age of the child at the time of separation, the lower their subsequent parental attachment and the more likely they were to perceive both their mother and father as less caring and more overprotective. No gender differences were found in children's responses to parental separation. These findings persisted after control for the confounding effects of family social background, marital conflict, parenting, child behavior, and remarriage. Results supported the importance of the early childhood years for the development of a secure and enduring attachment relationship between children and their parents.     

Log‐rank permutation tests for trend: saddlepoint p‐values and survival rate confidence intervals

Suppose p + 1 experimental groups correspond to increasing dose levels of a treatment and all groups are subject to right censoring. In such instances, permutation tests for trend can be performed based on statistics derived from the weighted log‐rank class. This article uses saddlepoint methods to determine the mid‐P‐values for such permutation tests for any test statistic in the weighted log‐rank class. Permutation simulations are replaced by analytical saddlepoint computations which provide extremely accurate mid‐P‐values that are exact for most practical purposes and almost always more accurate than normal approximations. The speed of mid‐P‐value computation allows for the inversion of such tests to determine confidence intervals for the percentage increase in mean (or median) survival time per unit increase in dosage. The Canadian Journal of Statistics 37: 5‐16; 2009 © 2009 Statistical Society of Canada     

Child-care availability and fertility in Norway

The child-care and fertility hypothesis has been in the literature for a long time and is straightforward: As child care becomes more available, affordable, and acceptable, the antinatalist effects of increased female educational attainment and work opportunities decrease. As an increasing number of countries express concern about low fertility, the child-care and fertility hypothesis takes on increased importance. Yet data and statistical limitations have heretofore limited empirical tests of the hypothesis. Using rich longitudinal data and appropriate statistical methodology, We show that increased availability of child care increases completed fertility. Moreover, this positive effect of child-care availability is found at every parity transition. We discuss the generalizability of these results to other settings and their broader importance for understanding variation and trends in low fertility.