Detracking America's schools: Equity at zero cost?

Schools across the country are ending the practice of grouping students based on ability, in part, because of research indicating that tracking hurts low-ability students without helping students of other ability levels. Using a nationally representative survey conducted by the National Center for Education Statistics, (NCES) we reexamine the impact of tracking on high school student achievement through the estimation of a standard education production function. This approach allows us to control for the possibility that track is correlated with factors such as class size and teacher education. In addition, we address the possibility that there are unobserved student or school characteristics that affect both achievement and track placement. Our results indicate that abolishing tracking in America's schools would have a large positive impact on achievement for students currently in the lower tracks, but that this increase in achievement would come at the expense of students in upper-track classes.     

Reply to Mac Giolla and Ly (2019): On the reporting of Bayes factors in deception research

Bayes factors provide a continuous measure of evidence for one hypothesis (e.g., the null, H0) relative to another (e.g., the alternative, H1). Warmelink et al. (2019, Legal Criminol Psychol, 24, 258) reported Bayes factors alongside p‐values to draw inferences about whether the order of expected versus unexpected questions influenced the amount of details interviewees provided during an interview. Mac Giolla & Ly (2019) provided several recommendations to improve the reporting of Bayesian analyses and used Warmelink et al. (2019) as a concrete example. These included (I) not to over‐rely on cut‐offs when interpreting Bayes factors; (II) to rely less on Bayes factors, and switch to ‘nominal support’; and (III) to report the posterior distribution. This paper elaborates on their recommendations and provides two further suggestions for improvement. First, we recommend deception researchers report Robustness Regions to demonstrate the sensitivity of their conclusions to the model of H1 used. Second, we demonstrate a method that deception researchers can use to estimate, a priori, the sample size likely to be required to provide conclusive evidence.     

Volatile Organic Compounds,Spectral Characterization and Morphology of Ammonium Nitrate Fuel Oil (ANFO) Samples

Ammonium nitrate fuel oil is an explosive mixture found in most antipersonnel landmines (APL) buried throughout the Colombian territory. During more than 50 years of internal conflict, the Colombian government has found that trained dogs are the most effective method to detect APL. However, the olfactive signature in ANFO is unknown and also if there are differences in detection related to the explosive manufacturing origin. Therefore, this work begins with the analytical validation of the method used to determine ammonia, in its derivatized form as carbamate, released by home-made ANFO using HS-SPME-GC-FID. Once validated, the method was used to identify ammonia and other organic volatile compounds present in ANFO, under laboratory and simulated field conditions. The validation process includes the evaluation of the optimum conditions for the derivation and extraction of butylcarbamate, the determination of the working ranges with linear response in FID, the limits of detection and quantification, the sensitivity, and the precision. The results of the validation established linearity and sensitivity in a concentration between 20 and 120 mg/L, as well as low limits of detection and quantification of 6.4 and 21.4 mg/L, respectively. Also, an intermediate precision of 11% for butylcarbamate with a repeatability of 8%. The validated method showed in real samples of home-made ANFO besides ammonia, the presence of low molecular methylamines, and also exhibited differences in volatile compositions according to the origin. The objective of this work is to offer a reliable analytical methodology for the extraction and analysis of volatile compounds from ANFO.     

Just the Two of Us? Civil Conflicts,Pro-State Militants,and the Violence Premium

Quantitative literature discussing violence in civil conflicts tends towards a typical model of engagement between governments and revolutionaries. Whilst recent work has shown the significant impact of multiple anti-government groups, a further feature remains understudied—the role of pro-state militants. This article theorizes a “violence premium” when such groups arise, which leads to all connected groups devoting greater energy to conflict than they would in isolation. Employing duration analysis and data from The Troubles in Northern Ireland, where Republicans act as revolutionary insurgents, Loyalists as pro-state militants, and the British Army as government forces, the violence premium is empirically confirmed. Both Loyalists and Republicans deviate from their underlying strategies to attack more frequently when violence by their rivals increases, with Republicans and the British Army engaging in the same way. An extended analysis, accounting for the status of the victim, shows that the violence premium resulting from interaction between Loyalists and Republicans targeted only the civilian population of Northern Ireland, elucidating the sectarian component of The Troubles. These results show that including all conflict parties and considering how they are linked are important features in studies that aim to determine the net level of violence in civil conflicts.     

Die elementaren (Fremd-)Erfahrungen der Gabe

What holds society together? In his famous essay The Gift (1925) Marcel Mauss answers this question. However, as this paper shows, he does so not by formulating something like a theory of reciprocity as was often assumed after Claude Lévi-Strauss’ brought forward his structuralist interpretation of Mauss. Instead, the reason why gift practices create obligatory, cohesive social bonds lies in experiences of ?being-possessed“ and self-transcendence. This assumption is proven by means of a new and detailed reading of Mauss’ Essai sur le don as well as by the anti-utilitarian reception of Mauss’ work by the Collège de Sociologie (Georges Bataille, Roger Caillois, Michel Leiris). Overall, Mauss’ theory of the gift features important elements of a theory of posession and self-transcendence which focuses on the dimensions of experience and action. This is why one can discern a certain similarity between Mauss’ and the pragmatist theory of action. Only against that backdrop the social binding force of gift practices can be explained.     

Die Konstruktion der soziologischen Realität durch Forschungsrating

The article subjects the research rating of sociology, published in 2008 and carried out by an evaluation group on behalf of the German Science Council, to a secondary analysis. It is shown that the research rating constructs a reality of sociology which does justice neither to the variety of sociological knowledge production nor to its own claim of multidimensionality. Unwillingly, the peer reviewed article has imposed itself as the dominant criterion for assessing the research quality of research units against other types of publication and other activities such as externally funded research, knowledge transfer for practical problem-solving and knowledge diffusion in the public sphere. This preference also affected the assessment of entire research institutions with regard to their impact and efficiency as well as the devaluation of knowledge transfer and diffusion. In this way, sociology is limited to the type of professional sociology, while critical, public and policy-oriented sociology are displaced.     

Emile Durkheims Moralpolitik des Individualismus

Emile Durkheim was neither a political scientist nor a political sociologist. His oeuvre though exhibits a political dimension which is not easy to grasp. This article makes the attempt to reconstruct his project of a moral politics of individualism. How is it possible to institutionalize successfully what Durkheim calls moral individualism? Durkheim’s project rests upon two pillars: the scientific and scholarly pillar which aims at the establishment of sociology as a scientific discipline at universities. The political pillar which sets out to analyze the socio-structural, institutional, cultural conditions, forms and effects of individualism and the successful socialization of its values which allows to take seriously the rhetoric of the freedom and dignity of human beings in modernity. Durkheim’s project is confronted with the traditional images of politics and the social order to delineate the differentia specifica of his moral politics of individualism.     

Campus Feminisms

Drawing from a long history of feminist writing grounded in personal reflection and informal dialogue between feminist thinkers, Cobb and Godden-Rasul present an email-based conversation with Jess Lishak, the outgoing Women’s Officer at the University of Manchester Students’ Union (2014–2016). The conversation draws on Cobb and Godden-Rasul’s experience as feminist academics engaged in critical institutional practice through such initiatives as editing the Inherently Human blog, organising the Inspirational Women of Law exhibition, and participating in university working groups on campus-based harassment and violence. In asking Lishak to reflect on her journey to feminism and her experiences of activism, the conversation ranges over such issues as personal influences and experiences, strategies for securing institutional support, encouraging student engagement with feminism, and campaigning tactics. The conversation developed out of a “Campus Feminisms” event in March 2016, which explored the rise of exciting new grassroots single-issue campaigns and political mobilisations by students in higher education, and was organised by Cobb and Godden-Rasul at Newcastle University, UK. Undergraduate and postgraduate students shared their personal struggles and achievements in bringing feminist ideas and campaigns to their university campuses. Lucy Morgan, the Gender Equality Officer at Newcastle University Students’ Union, offered inspiring reflections on her efforts to reinvigorate the ‘F’ word, in the face of simultaneous student apathy and backlash. Many of these campus-based mobilisations have demanded better institutional responses to sexual violence against women. At around the same time, Cobb was beginning a new role as the co-chair of the University of Manchester’s first Task & Finish Group on Sexual Violence and Harassment on Campus. This followed Universities UK’s decision to create a taskforce to consider options for improving institutional responses to student safety. In the process, Cobb crossed paths with Lishak, who had been appointed a member of the UUK Taskforce in light of her path-breaking students’ union work addressing violence against women. Since Lishak was an exemplar of this new feminist wave in higher education, one that was still inadequately understood by feminist academics despite often working side-by-side within the same institutions, the authors embarked on this conversation in order to better understand the relationship between academic and student feminist activism on campus. As Lishak makes clear in her own reflections, there is nothing inevitable about the synergies between these movements, but there is potentially a great deal that could be achieved through their closer engagement.