Evaluation of the Cozart RapiScan drug test system for opiates and cocaine in oral fluid

The purpose of this study was to evaluate the efficiency of the Cozart^® RapiScan (CRS) drug test system for detecting opiates and cocaine in oral fluid. Oral fluid samples were collected using the Cozart^® RapiScan collection system from 358 donors who were receiving treatment for their addiction and were monitored for drug misuse. A further 103 oral fluid samples were collected from volunteer donors who were not drug users. The samples were analyzed in the laboratory using the two-panel Cozart^® RapiScan cartridge for opiates and cocaine and confirmed using gas chromatography–mass spectrometry (GC–MS). The samples were stored frozen at −20 °C until analysis by GC–MS. The overall accuracy of the CRS for both opiates and cocaine was 100%. Samples spiked at 50% above and below the cut-off consistently gave negative and positive results respectively. A total of 88 samples were positive for various opiates and 111 samples were positive for cocaine and/or its metabolites. The CRS for opiates and cocaine in oral fluid, using a cut-off of 30 ng/mL morphine or benzoylecgonine equivalents in neat oral fluid, had overall efficiencies of 98% and 99%, respectively, versus GC–MS. A series of potential adulterants of oral fluid were evaluated and shown not to alter the outcome of the test result.     

The Agrarian question in Mexico: Debate in a Cul‐de‐Sac

The theme of this review essay is Mexico's unresolved agrarian question and the possibility of a distinct ‘Mexican Road’. Four books on the Mexican peasantry are considered: in turn, by John Gledhill, Jonathan Fox, Frank Cancian and Roger Bartra. They all deal with the relationships that connect that peasantry to the Mexican state within a tradition of rural development that has been punctuated and characterised by revolution and state‐building agrarian reform. It is argued that our understanding of the agrarian question in Mexico continues to be bogged down by unfocused monographs on the one hand (the books by the first three of the authors named) and schematic assumptions on the other (as exemplified by Bartra); and that much research needs to be done before the ‘Mexican Road’ can be seen as an accepted option among substantive agrarian alternatives. That research needs to appraise two assumptions frequently made: first, that the hacienda economy was pre‐capitalist; and secondly, that the agrarian programme in Mexico ushered in the rural transition to capitalism.

Casi Nada: A Study of Agrarian Reform in the Homeland of Cardenismo, by John Gledhill, Austin, TX: University of Texas Press, 1991. Pp.xv + 420. NP. ISBN 968 7230 68 1

The Politics of Food in Mexico, by Jonathan Fox. Ithaca, NY and London: Cornell University Press, 1993. Pp.xii + 280. $43.95 (hardback). ISBN 0 8014 2716 9

The Decline of Community in Zinacantdn, by Frank Cancian. Stanford, CA: Stanford University Press, 1992. Pp.xxi + 300. $42.50 (hardback) ISBN 0 8047 2040 1

Agrarian Structure and Political Power in Mexico, by Roger Bartra. Baltimore, MD and London: Johns Hopkins University Press, 1993. Pp.xvii + 221. £37 (hardback); £12.50 (paperback) ISBN 0 80184 4398 7 and 4542 4     

Carving a Diplomatic Niche?: The April 1956 Soviet Visit to Britain

Abstract

Nikita Khrushchev and Nikolai Bulganin's visit to Britain in April 1956 was the first by the new Soviet leadership to a Western bloc country after Josef Stalin's death. It presented British policy-makers with a unique opportunity for insight and discussion. However, British self-deception regarding their scope for independent action as well as excessive focus on events in the Middle East hampered efforts to build a rapport with Khrushchev and Bulganin. This analysis explores the planning and conduct of what turned out to be a fruitless diplomatic initiative. The visit illustrates British and Soviet policy at the time, as well as Britain's already clear position as the junior partner in the Anglo-American “special relationship” on the eve of Suez.     

The United States of Amnesia: US foreign policy and the recurrence of innocence

This article interrogates the ways in which the United States ‘forgets’ the consequences and effects of its foreign policy in the making of its identity. In particular, the article argues that such forgetting enables the United States government to frame its interventions in world affairs as innocent and morally driven. Literature on collective memory and the forgetting that enables the production of such memory informs one element of the argument. Three contemporary films from the amnesia genre are analysed to provide insights into the kind of American identity forged in the acts of remembering and forgetting, illustrating the argument that remembering and forgetting are complex, voluntary and at times mendacious processes. The article concludes with the observation that the processes of forgetting past action when framing the context of new interventions make the United States a dangerous force in global affairs.     

Violence against teachers: prevalence and consequences

Data collected from 731 teachers were used to examine the consequences of violence directed toward teachers while in the workplace. Analyses showed that the majority of respondents (n = 585, 80.0%) had experienced school-related violence—broadly defined—at one point in their careers. Serious violence (actual, attempted, or threatened physical violence) was less common, but still common enough to be of concern (n = 202, 27.6%). Violence predicted physical and emotional effects, as well as teaching-related functioning. In addition, a model with fear as a potential mediator revealed that both fear and violence were independently predictive of these negative outcomes. Finally, analyses showed that, in general, women reported higher levels of physical symptoms compared to men. We discuss the implications of violence against teachers in terms of personal consequences and the implications for mental health professionals working in an educational setting.