Ventilatory and metabolic demands during aggressive physical restraint in healthy adults

We investigated ventilatory and metabolic demands in healthy adults when placed in the prone maximal restraint position (PMRP), i.e., hogtie restraint. Maximal voluntary ventilation (MVV) was measured in seated subjects (n=30), in the PMRP, and when prone with up to 90.1 or 102.3 kg of weight on the back. MVV with the heaviest weight was 70% of the seated MVV (122+/-28 and 156+/-38 L/min, respectively; p<0.001). Also, subjects (n=27) were placed in the PMRP and struggled vigorously for 60 sec. During the restrained struggle, ventilatory function (V(E)/ MVV) was 44% of MVV in the resting PMRP. While prone with up to 90.1 or 102.3 kg on the back, the decrease in MVV was of no clinical importance in these subjects. Also, while maximally struggling in the PMRP, V(E) was still adequate to supply the ventilatory needs.     

Using Gas Chromatography with Ion Mobility Spectrometry to Resolve Explosive Compounds in the Presence of Interferents*

Abstract: Ion mobility spectrometry (IMS) is a valued field detection technology because of its speed and high sensitivity, but IMS cannot easily resolve analytes of interest within mixtures. Coupling gas chromatography (GC) to IMS adds a separation capability to resolve complex matrices. A GC‐IONSCAN^® operated in IMS and GC/IMS modes was evaluated with combinations of five explosives and four interferents. In 100 explosive/interferent combinations, IMS yielded 21 false positives while GC/IMS substantially reduced the occurrence of false positives to one. In addition, the results indicate that through redesign or modification of the preconcentrator there would be significant advantages to using GC/IMS, such as enhancement of the linear dynamic range (LDR) in some situations. By balancing sensitivity with LDR, GC/IMS could prove to be a very advantageous tool when addressing real world complex mixture situations.     

Misinterpreting Danger? Stereotype Threat,Pre-attack Indicators,and Police-Citizen Interactions

This paper compares police trainings and materials on pre-attack indicators in police-citizen interactions with similar behavioral indicators of stereotype threat, which is not necessarily a sign of danger. Stereotype threat is a social identity threat in which individuals feel that they may be judged or treated negatively based on a social group stereotype (Steele 1997). This psychological threat can increase the target’s anxiety, physiological arousal, and decrease cognitive capacity. We hypothesize that symptoms of stereotype threat might be similar to pre-attack indicators being taught to police in the USA, which can lead police to potentially misinterpret a citizen’s actions. Using a deductive content analysis, three coders analyzed a sample of pre-attack indicator police trainings for three indicators of stereotype threat: anxiety, arousal, and reduced cognitive capacity. Results found significant overlap between danger indicators taught in trainings and stereotype threat indicators. All 15 identified trainings contained at least one of the three indicators of stereotype threat, and 13 contained at least two indicators. None of the trainings discussed stereotype threat. We argue that stereotype threat should be taught in addition to relevant indicators of danger in trainings, lest officers misinterpret citizens’ stereotype threat-related behaviors solely as manifestations of imminent danger.     

Understanding how sexual offenders compare across psychiatric and correctional settings: examination of Canadian mentally ill sexual offenders

Abstract

Much of what is known about sexual offenders is based on correctional samples and then applied across settings based on the assumption that this group is homogeneous. In this study, 149 files were compared, including 108 cases from the forensic mental health system (FMH) and 41 cases from the correctional system (COR). Although many similarities were observed between the FMH and COR groups, the results also revealed important differences. The FMH group was characterised by more frequent hospitalisations, higher rates of major mental illness and single status. The COR group was characterised by a history of physical and sexual abuse, family history of addictions, more intrusive sexual offences and higher rates of offending. These results highlight different profiles for sexual offenders in forensic mental health and correctional settings and challenge us to consider the implications for assessment, treatment and risk management of this unique group of sexual offenders.     

The Social Outcomes of Education and Feedbacks on Growth in Africa

Most of the effects of education included in the complete model presented here are shown to be consistent with those found in the mainstream of the research on each outcome using microeconomic data. This, however, is a first effort to estimate net education effects more comprehensively, beyond just growth and health effects on other key measures of development in Africa, and also a new view of indirect feedbacks on economic growth and of externalities. After developing the conceptual framework, the regression estimates are presented together with a discussion of the net direct and indirect effects of education on each outcome. These are shown to improve infant mortality, increase longevity, strengthen civic institutions and democratisation, increase political stability, and increase investment in physical capital, which in turn have positive delayed feedback effects on the economic growth process. The effects also lower fertility rates and population growth rates but the latter occurs only after long delays because of the short-term positive effects of education on health. There are significant net education effects reducing poverty, inequality and crime, the latter after netting out negative externalities from growth and white-collar crime. Education effects reducing poverty and substituting skills for extractive exports also contribute to environmental sustainability. Simulations solve the complete model endogenously and iteratively over time for all of the direct and indirect (largely externality) effects. They reveal that indirect feedback effects including those on non-market outcomes are larger than the direct effects. Some effects are immediate, but many of the lags are long. So policy options for a continent in crisis that consider these lags are considered.     

Book Reviews

Jarol B. Manheim, All of the People all the Time: Strategic Communication and American Politics (New York: M.E. Sharpe, Inc., 1991), 255 pp. $25.00.

Harry C. Mansfield, Jr., America's Constitutional Soul (Baltimore, MD: Johns Hopkins Press, 1991), pp. 236.

Donald L. Horowitz, A Democratic South Africa? (Berkeley, CA: University of California Press, 1991), 293 pp. $24.95.     

Regional prosperities compared: Massachusetts and Baden-Württemberg in the 1980s

This article compares the relationship between economic development and public policy in two of the most prosperous regions of the 1980s: Massachusetts in the United States and Baden-Württemberg in West Germany. Beginning with a critique of the theory of the product life-cycle, the article examines the rise and fall of traditional industries in Massachusetts and their survival in Baden-Württemberg. It then goes on to consider the rise–but also the vulnerability–of the high-tech and financial firms in Massachusetts, as well as the more robust, though almost invisible growth of these sectors in Baden-Württemberg. The burden of the argument is that there are, strictly speaking, no ‘mature’ industries and public policies aimed at stimulating innovation are most successful when the latter is integrated into the local industrial structure as a whole rather than isolated into a distinct high-tech sector.     

Simulating commercial policy in a small,open dual economy with urban unemployment: A general equilibrium approach

A two‐sector numerical general equilibrium model calibrated on Kenyan data is used to consider second‐best tariff policy in an economy with a distorted market for urban‐industrial labour and urban unemployment. The results illustrate the sensitivity of second‐best policy to the way the administered urban wage is determined (whether it is fixed primarily in terms of food or the manufactured good), and to the degree of inter‐sectoral mobility of capital. Efficiency gains from moving to a second‐best policy are shown to be small in comparison with the gains from eliminating the wage distortion in the first place.