Male-Female Power Differences at Work: A Comparison of Supervisors and Policymakers*

This study estimates differences in access to power positions and the degree to which supervisors and policymakers exercise work power among women and men. The relative importance of sex and other relevant characteristics in determining the acquisition of supervisor and policymaker positions is assessed. Furthermore, the attainment of supervisory authority and strategic power of male and female supervisors and policymakers is analyzed. The results of logistic regression analyses suggest that regardless of other characteristics men have significantly more access to supervisor and policymaker positions than women. Nevertheless, ordinary least squares regression analyses demonstrate that once individuals are in supervisory or policy-making positions, sex is not an important determinant of the degree of work power. Additional results indicate that occupational status (evaluated by Duncan's Socio-Economic Index) but not sex segregation by occupation affects the acquisition of work power.     

Bias for Vocalic Over Consonantal Information in 6‐Month‐Olds

Human languages rely on the ability to learn and produce an indefinite number of words by combining consonants and vowels in a lawful manner. The categorization of speech representations into consonants and vowels is evidenced by the tendency of adult speakers, attested in many languages, to use consonants and vowels for different tasks. Consonants are favored in lexical tasks, while vowels are favored to learn structural regularities. Recent results suggest that this specialization is already observable at 12 months of age in Italian participants. Here, we investigated the representations of younger infants. In a series of anticipatory looking experiments, we showed that Italian 6‐month‐olds rely more on vowels than on consonants when learning the predictions made by individual words (Experiment 1) and are better at generalizing a structure when it is implemented over vowels than when it is implemented over consonants (Experiments 2 and 3). Until 6 months of age, infants thus show a general vocalic bias, which contrasts with the specialization previously observed at 12 months. These results suggest the format of speech representations changes during the second semester of life.     

Site-Specific Updating and Aggregation of Bayesian Belief Network Models for Multiple Experts

A method for combining multiple expert opinions that are encoded in a Bayesian Belief Network (BBN) model is presented and applied to a problem involving the cleanup of hazardous chemicals at a site with contaminated groundwater. The method uses Bayes Rule to update each expert model with the observed evidence, then uses it again to compute posterior probability weights for each model. The weights reflect the consistency of each model with the observed evidence, allowing the aggregate model to be tailored to the particular conditions observed in the site-specific application of the risk model. The Bayesian update is easy to implement, since the likelihood for the set of evidence (observations for selected nodes of the BBN model) is readily computed by sequential execution of the BBN model. The method is demonstrated using a simple pedagogical example and subsequently applied to a groundwater contamination problem using an expert-knowledge BBN model. The BBN model in this application predicts the probability that reductive dechlorination of the contaminant trichlorethene (TCE) is occurring at a site--a critical step in the demonstration of the feasibility of monitored natural attenuation for site cleanup--given information on 14 measurable antecedent and descendant conditions. The predictions for the BBN models for 21 experts are weighted and aggregated using examples of hypothetical and actual site data. The method allows more weight for those expert models that are more reflective of the site conditions, and is shown to yield an aggregate prediction that differs from that of simple model averaging in a potentially significant manner.     

Risk-Taking,Delay Discounting,and Time Perspective in Adolescent Gamblers: An Experimental Study

Previous research has demonstrated that adult pathological gamblers (compared to controls) show risk-proneness, foreshortened time horizon, and preference for immediate rewards. No study has ever examined the interplay of these factors in adolescent gambling. A total of 104 adolescents took part in the research. Two equal-number groups of adolescent non-problem and problem gamblers, defined using the South Oaks Gambling Screen-Revised for Adolescents, were administered the Balloon Analogue Risk Task (BART), the Consideration of Future Consequences (CFC-14) scale, and the Monetary Choice Questionnaire (MCQ). Adolescent problem gamblers were found to be more risk-prone, more oriented to the present, and to discount delay rewards more steeply than adolescent non-problem gamblers. Results of logistic regression analysis revealed that BART, MCQ, and CFC scores predicted gambling severity. These novel finding provides the first evidence of an association among problematic gambling, high risk-taking proneness, steep delay discounting, and foreshortened time horizon among adolescents. It may be that excessive gambling induces shortsighted behaviors that, in turn, facilitate gambling involvement.     

Reduction by half: the impact on bees of 34 years of urbanization

Urban ecosystems are growing rapidly and urbanization is an important cause of the loss of biodiversity. Bees are declining in abundance worldwide, including urban areas, and this decline is alarming because of their global importance as plant pollinators. Here we examine that decline by comparing a bee assemblage sampled in the 1980s and again in 2015, in an urban area of the city of Curitiba. Both studies sampled assemblages with hand-nets every two weeks during one year of study. Bee species richness has declined by 45% (112 species then, 63 today). Two species that have disappeared, Gaesischia fulgurans (Holmberg, 1903) and Thectochlora basiatra (Strand, 1910), have also disappeared elsewhere in the city. Also, relative abundances of species have changed, notably with the increase of social bees. Large bees that nest in cavities have also increased relative to small bees that nest in the ground. These findings are similar with previous reports indicating the sensibility of bees to urbanization. The increase in paved areas, in urban population and in exotic plants are all probably responsible for the sharp decline in bee diversity and abundance.     

Parental retirement timing: the role of unanticipated events in the lives of adult children

Although anecdotal evidence of older parents postponing retirement to financially support their grown children is common, the empirical evidence is scarce. In this paper, we use data from the 1992 to 2010 waves of the Health and Retirement Study to identify a broad set of pivotal events in the lives of adult children. First, we determine whether these events affect subsequent financial transfers from parents to children over multiple years. Next, we determine whether those events that result in subsequent transfers also shift parental retirement expectations. Finally, we quantify the impact of the unexpected children’s events on retirement realizations, moving beyond the correlational analyses in prior literature. Our findings show that a child’s move out of a parental home decreases both expectations and realizations of working after age 65. The magnitude of this effect is similar to that of an own health shock experienced during pre-retirement years.     

Combination of a structured aerobic and resistance exercise improves glycaemic control in pregnant women diagnosed with gestational diabetes mellitus. A randomised controlled trial

Problem

Gestational diabetes mellitus, defined as any carbohydrate intolerance first diagnosed during pregnancy, is associated with a variety of adverse outcomes, both for the mother and her child.

The Influence of Policy Context on Transition Age Foster Youths' Views of Self-Sufficiency

In this exploratory study, focus group methodology was used to examine the potential influence of policy context on informing transition age youth (TAY) views of self-sufficiency upon aging out of foster care. The authors purposively selected two different policy contexts concerning extended foster care: New York City and Los Angeles County. Compared to New York City, Los Angeles has a relatively newer policy concerning extending the age of foster care benefits to 21. Four focus groups were conducted (2 in each location) with TAY recruited from community-based foster care agencies. The total number of participants (aged 18–22) was 21 (13 in Los Angeles and 8 in New York). In both policy contexts, participants defined self-sufficiency mainly as economic independence and planning for success. However, while Los Angeles TAY emphasized a need to “strive through it,” meaning persevere through self-reliance, New York TAY believed that self-sufficiency could be at least partially achieved by leaning on others, including social services. The findings help to illustrate how varying policy landscapes, including those that are in flux, can shape client understandings of core beliefs related to service utilization and client–provider interactions. Implications for child welfare policy and practice are proposed.     

Live together: does culture matter?

Review of Economics of the Household - This paper studies the role of culture in determining the decision to live together (as a married or unmarried couple). To examine this issue, we utilize data...