Counterterrorism strategies in the lab

We conduct experiments to test the collective action dilemmas associated with defensive and proactive counterterror strategies. Defensive policies are associated with creating public ??bads' (e.g., a commons) whereas proactive policies are akin to the voluntary provision of public goods. When combined, the inefficiency of collective action is exacerbated, resulting in a situation known as a Prisoner??s Dilemma squared (PD²). Deterministic versus probabilistic equivalent versions of the associated externalities are compared within a laboratory setting. Experimental results reveal that the collective action problem associated with counterterror strategies is deepened in uncertain environments, and is indeed a robust regularity that is not easily overcome; as individuals gain more experience, they become even more self-interested.     

Large players in the nanogame: dedicated nanotech subsidiaries or distributed nanotech capabilities?

Nanotechnologies are reshaping the boundaries between industries, combining two aspects of innovation—both enhancing competences based on cumulative knowledge and experience and destroying competences by forcing the renewal of the firm’s knowledge base. To analyze how worldwide R&D leaders adapt to this new technology, we conduct an econometric analysis of about 3,000 subsidiaries of the largest R&D spenders. We find that large groups are creating medium size subsidiary companies to explore nanotechnologies. Knowledge circulates mostly amongst subsidiaries within the same group and scientific clusters do not affect their involvement in nanotechnologies. Nanotechnologies remain marginal within these subsidiaries’ knowledge bases and are distributed within corporate groups, stimulating recombination between nanotechnology and other technologies.     

The temporal fate of drugs in decomposing porcine tissue

Drug levels in decomposed individuals are difficult to interpret. Concentrations of 16 drugs were monitored in tissues (blood, brain, liver, kidney, muscle, and soil) from decomposing pigs for 1 week. Pigs were divided into groups (n = 5) with each group receiving four drugs. Drug cocktails were prepared from pharmaceutical formulations. Intracardiac pentobarbital sacrifice was 4 h after dosing, with tissue collection at 4, 24, 48, 96, and 168 h postdosing. Samples were frozen until assay. Detection and quantitation of drugs were through solid phase extraction followed by gas chromatograph/mass spectrometer analysis. Brain and kidneys were not available after 48 h; liver and muscle persisted for 1 week. Concentration of drugs increased during decomposition. During 1 week of decomposition, muscle showed average levels increasing but concentrations in liver were increased many fold, compared to muscle. Attempting to interpret drug levels in decomposed bodies may lead to incorrect conclusions about cause and manner of death.     

Improving the Community College Transfer Pathway to the Baccalaureate: The Effect of California's Associate Degree for Transfer

The transfer between two-year and four-year colleges is a critical path to baccalaureate attainment. Yet students face a number of barriers in transfer pathways, including a lack of coherent coordination and articulation between their community colleges and four-year institutions, resulting in excess units and increased time to degree. In this paper we evaluate the impact of California's Student Transfer Achievement Reform Act, which aimed to create a more seamless pathway between the California Community Colleges and the California State University. We investigate whether the reform effort met its intended goal of improving baccalaureate receipt, and greater efficiency in earning these degrees, among community college transfer students. We tease out plausibly causal effects of the policy by leveraging the exogenous variation in the timing of the implementation of the reform in different campuses and fields of study. We find an overall positive effect on bachelor's degree attainment. This increase is driven entirely by increased transfer rather than an increased probability of earning a BA/BS conditional on transfer. We find only suggestive evidence that the policy led to greater efficiency (i.e., fewer units at graduation) in BA/BS receipt for transfer students. These findings are broadly consistent across student subgroups.     

Prescribing engagement in environmental risk assessment for gene drive technology

Gene drive technology is a nascent biotechnology with the potential to purposefully alter or eliminate a species. There have been broad calls for engagement to inform gene drive governance. Over the past seven years, the gene drive community has been developing risk assessment guidelines to determine what form future gene drive risk assessments take, including whether and how they involve engagement. To explore who is developing these guidelines and how engagement in risk assessment is being prescribed, we conduct a document analysis of gene drive risk assessment guideline documents from 2014 to 2020. We found that a narrow set of organizations have developed 10 key guideline documents and that with only one exception the documents prescribe a narrow, vague, or completely absent role for engagement in gene drive risk assessment. Without substantively prescribed engagement in guidelines, the relevance, rigor, and trustworthiness of gene drive risk assessment and governance will suffer.     

Judicial decision-making in family court involving children with autism spectrum disorder

The prevalence of autism spectrum disorder (ASD) in children and adolescents has increased over the past decade. Consequently, the courts and experts are more likely to be exposed to these children whose needs are highly heterogeneous. The present study aims to document judicial decision-making about children with autism spectrum as well as the parenting recommendations made by experts involved in these cases. There were 104 court decisions reviewed in Quebec over the past ten years. The results show that 85.6% of the decisions included a child custody assessment and that judges are more likely to order primary care to mother (56%). However, shared parenting (27%) and primary care to the father (17%) were also ordered in disputes involving an autistic child. Bivariate analyses revealed that challenges with parental monitoring and supervision were associated with court-ordered parenting arrangements. The present study revealed that a child custody assessment as well as father custody are more often observed than in the general population. This study highlights the need for further research to shed light on the best interests of children with ASD following the separation of their parents.