Motivations for self-defensive aggression in dating relationships

Previous research has suggested that the occurrence of dating violence is influenced by various motivations, including self-defense. While some data have suggested that females are more likely to use physical aggression in self-defense, assessment measures of self-defense have been limited in several notable ways, hindering efforts at fully understanding the myriad of reasons contributing to self-defensive aggression. The current study sought to examine motivations for physical aggression among male and female college students using a contextual self-report measure of self-defensive aggression designed specifically for the current study. Results showed that numerous motivations for physical aggression were endorsed by both males and females and, contrary to expectations, females were not more likely to use aggression in self-defense. Implications of these findings for future research and dating violence prevention programming are discussed.     

Parental Substance Use and Foster Care Reentry

Foster care involvement due to parental substance use is a common problem with many challenges associated with service delivery. Using administrative data from a Midwestern state between the years 2009 and 2015 (N = 17,420), this study examines characteristics of substance-abusing families at the time of entry into the foster care system and estimates the risk of reentry subsequent to reunification. Bivariate findings and survival analysis for reentry suggests substance-using parents are more likely to be involved in additional allegations associated with foster care involvement. These results highlight the need for improved services integration and coordinated delivery among service systems.     

Public enterprise and the rise and fall of labor share

Developed economies experienced a rise and fall in labor share (LS) in the postwar period. We present a novel explanation of these trends – public enterprise employment. We document a link between it and both LS and wage compression in 15 developed nations. We then build a model that shows how overstaffing public enterprises can increase LS and reduce wage inequality. Overstaffing directly increases public enterprise LS and indirectly increases private sector LS by reducing available labor. We examine several public enterprise reforms. Consistent with the model’s predictions, reforms reduce public enterprise LS permanently and private sector LS temporarily.     

The Influence of Value Orientations,Personal Beliefs,and Knowledge about Resource Extraction on Local Leaders' Positions on Shale Development

Unconventional shale oil and gas production plays a prominent role in boosting economic growth and stimulating wealth creation in many communities. However, because of potential social and environmental drawbacks, including a lack of affordable housing and groundwater contamination from drilling, unconventional shale development is highly contentious in many areas and has resulted in many community conflicts. Hydraulic fracturing, which is a specific technology utilized in unconventional shale development, has proved especially contentious because of concerns about its long‐term environmental consequences. Given the fast pace of shale development, coupled with the controversy that surrounds it, we seek to understand what factors affect a local government official's stance on shale development and hydraulic fracturing. To do this we draw from value‐belief‐norms theory while additionally examining knowledge and community‐level factors that can influence an official's position. In this study, we survey 308 local government officials across six shale plays in the United States to examine local officials' positions on shale development and hydraulic fracturing. We find that the more positively officials perceive the consequences of shale development, the less likely they are to support banning hydraulic fracturing. Additionally, we find that networks to other shale communities are positively associated with favoring a ban. Further, leaders with a bachelor's degree or higher are more likely to favor a ban than those with lower than a bachelor's degree.     

The effect of earthworms on roadway-derived Zn deposited as a surface layer in storm water retention basin soils

Increased urban development, including an increase in impervious surfaces has the potential to alter the biogeochemistry of surface systems due to storm water runoff contaminated with potentially toxic trace metals (e.g. Zn, Cu and Pb). A major source for urban metals is dust that accumulates on roadways. This roadway dust is derived from vehicle wear sources and tends to be enriched in trace metals such as Pb, Zn, Cu, Cd, Ni and Cr. This continuous source is then being transported via storm water runoff to receiving systems, such as storm water retention systems, which become important focusing environments for trace metal deposition. The fate of these roadway derived metals and their bioavailability once deposited in these urban ecosystems is not well understood. In this investigation we tested the hypothesis that the distribution and form of surface deposited roadway-derived Zn is a function of earthworm processes and is species dependent. The results of this investigation indicate that roadway dust derived Zn deposited as a surface layer on urban soils is readily removed from the surface in less than 30 days whether earthworms are present or not. However, after 90 days, the presence of earthworms and the life habit of the earthworm species present was found to have a significant impact on the physical and chemical cycling of roadway derived trace metals in storm water retention basin soils.