Selection Bias and Continuous-Time Duration Models: Consequences and a Proposed Solution

This article analyzes the consequences of nonrandom sample selection for continuous-time duration analyses and develops a new estimator to correct for it when necessary. We conduct a series of Monte Carlo analyses that estimate common duration models as well as our proposed duration model with selection. These simulations show that ignoring sample selection issues can lead to biased parameter estimates, including the appearance of (nonexistent) duration dependence. In addition, our proposed estimator is found to be superior in root mean-square error terms when nontrivial amounts of selection are present. Finally, we provide an empirical application of our method by studying whether self-selectivity is a problem for studies of leaders' survival during and following militarized conflicts.     

Elemental Analysis of Variably Contaminated Cremains Using X‐ray Fluorescence Spectrometry

Analyzing and identifying skeletal remains becomes increasingly difficult when remains have been cremated, especially in cases where the cremated material may have been intentionally contaminated with nonskeletal material. This study examined the potential of X‐ray fluorescence spectrometry (XRF) to detect the presence of nonskeletal contaminants in samples of cremains. Eleven samples of cremains were variably combined with concrete mix and analyzed using XRF. Photon counts of elements in each sample were analyzed, and the coefficient of determination (R²) using unweighted linear regression as a function of percent cremains was calculated. Results showed that with changes in the proportion of skeletal material and contaminant, there were significant (R² > 0.90) changes in detected levels of phosphorus, potassium, zinc, aluminum, and sulfur. The use of XRF is concluded to be a valid approach in the identification of the presence of nonskeletal material in potentially contaminated cremains.     

How Well Are Authorities Suited to Prevent Damage to the Environment?

Environment protection in Austria is still carried out mainly by public authorities. This article focuses on preventive measures. It takes up the approval of new or rebuilt plants according to the Trade Act as an illustration for a considerable number of similar procedures. Although there is an ongoing discussion of the advantages and disadvantages of those procedures, no attempt has been made yet to examine their contents from a strictly economic perspective. Therefore, the article extracts the economic consequences from the wording of the law and examines whether they can give rise to efficient environment protection, taking into consideration the goals and constraints of all the participants in the negotiations. It is found that in principle the procedure allows for efficient solutions, despite the disadvantages, which are frequently observed in the course of its application. Moreover, it is argued that some features of the procedure, such as the selection of an appropriate techn ology on behalf of an applicant as well as negotiations with the potential pollutees have not yet been interpreted correctly. An assessment against more market-orientated measures, which are favored nowadays, ought to take into consideration that they generally cannot be implemented without support from the government.     

Perceptions and use of videoconferencing in forensic mental health assessments: A survey of evaluators and legal personnel

ABSTRACT

The use of videoconferencing (VC) to conduct forensic mental health assessments (FMHA) is increasing. Yet, little is known about its acceptability among clinicians or legal professionals. In Study 1 (N?=?156), forensic evaluators were asked about their use of VC, reasons for its use, and opinions about the validity, usefulness, ethics, and legality of its use. An estimated one-third of evaluators have used VC in the past. Although evaluators overall expressed moderate concern over the ethics and legality of use, prior experience appeared to mitigate concerns. Younger practitioners were also more open to using VC. Reduced costs for courts was the most frequently endorsed benefit associated with VC, while restricted ability to administer psychological testing and potential technological problems were seen as the biggest disadvantages. In Study 2 (N?=?27), attorneys and judges were surveyed about frequency with which they encounter VC for FMHA and their perceptions about the validity of those assessments. Findings indicated legal personnel expressed rather negative views without having much first-hand experience of VC, including concerns about establishing rapport and technical difficulties. These studies have implications for whether VC will be adopted more frequently in FMHA.     

‘A Nation Reborn’: Right to Law and Right to Life in The Purge Franchise

ABSTRACT

Popular culture matters for helping make sense of our political lives. This article addresses the value of dystopian horror films in challenging narratives about the state. It is situated within broader understandings of popular culture and politics, and specifically within narrative understandings of the state as a performative body. It presents The Purge film franchise as an example of such a challenge to state narratives, and argues that through its distortion of dominant state narratives, the franchise reveals and challenges the intersections of economic and racial inequality in the neoliberal United States. It examines in particular the emergency broadcast featured in all four films, which positions citizens in a relationship with law and life where the right to law conflates the right to life, and argues that the films present an understanding of vulnerability and abandonment that are in some ways already present in the state. It concludes by questioning what, if any, the capacities are for resistance.     

A comprehensive regression tree to estimate body weight from the skeleton

The purpose of this research is to estimate actual body weight (in particular obesity) from the human skeleton. Known individuals (total n=187) were studied from the Bass Collection from the University of Tennessee, Knoxville. This research combines bone density, cross-sectional geometry of the femur and skeletal pathologies. Bone mineral density was calculated for the proximal femur. Three-dimensional bone surface models were created from computed tomographic scans. Cross-sectional geometry of the femur was calculated at five locations along the diaphysis. The pathologies analyzed were heel spurs, diffuse idiopathic skeletal hyperostosis (DISH), and tibial osteoarthritis. The best regression tree model included only four variables. The first split to estimate body weight was the minimum moment of inertia (I(y) ) at the distal femur, the second was midshaft width, then anteroposterior thickness at the proximal slice and the final split was the degree of DISH (SD 17.1-31.0 kg). The ability to estimate body weight from the skeleton is one more useful tool for the osteologist.     

Taphonomic Analysis of Rodentia and Lagomorpha Bone Gnawing Based Upon Incisor Size

Rodent and lagomorph species have a worldwide distribution and have the potential to alter remains from forensic cases by gnawing soft tissue and bones and through dispersal. The present research compiled metric data on the incisors widths of all rodent and lagomorph species whose ranges include Massachusetts, U.S.A., to compare their sizes to gnawing damage found on 17 cases of human remains from the Office of the Chief Medical Examiner, Boston, MA. Data on gnawing maximum striation widths also were collected from live laboratory, zoo, and wild specimens. Gnawing damage on the forensic cases could be attributed only to a particular size class of rodent or lagomorph, and identification to a particular species based on gnawing damage alone may be possible only in relatively rare cases. Multiple species examined here have broad distribution ranges, so their taphonomic alterations may impact bones from forensic cases throughout large portions of North America.     

Assessing the Direct and Indirect Effects of Legitimacy on Public Empowerment of Police: A Study of Public Support for Police Militarization in America

The process‐based model dominates contemporary American research on police‐community relations and perceptions of police. A sizable literature has examined the linkages between procedural justice, legitimacy, compliance with the law, and cooperation with police. Less examined is the relationship between legitimacy and public empowerment of police. This study examines this relationship, focusing on police militarization. We first examine the direct effect of legitimacy on public willingness to allow police to become more militarized. Drawing from cognitive psychology and rational choice theories, we then consider indirect paths between legitimacy and empowerment, concentrating on two anticipated consequences of militarization—an increase in police effectiveness and possible harm to civil liberties. Using a national sample of over 700 American adults, and structural equation modeling, results indicate legitimacy has both direct and indirect effects on police empowerment, in part by shaping assessments of the possible consequences of empowerment. Implications for theory and policy are discussed.