Trajectories of Perceived Parental Psychological Control across Adolescence and Implications for the Development of Depressive and Anxiety Symptoms

Journal of Youth and Adolescence - Theory and research indicate considerable changes in parental control across adolescence (e.g., declining behavioral control), but the developmental course and...     

Perceptions of Dishonesty: Understanding Parents’ Reports of and Influence on Children and Adolescents’ Lie-Telling

Journal of Youth and Adolescence - Previous studies suggest parents lack knowledge regarding child and adolescent lie-telling; however, no study to date has examined children’s and...     

Detection of Mitragynine in Mitragyna Speciosa (Kratom) Using Surface-Enhanced Raman Spectroscopy with Handheld Devices

A simple, quick, selective, sensitive, and effective field-friendly method capable of being used by nonexperts has been developed for detecting mitragynine in Mitragyna speciosa (kratom) using surface-enhanced Raman spectroscopy (SERS). Over 100 samples and blanks (known to be either positive or negative for the presence of mitragynine) were examined in duplicate using five identical handheld Raman spectrometers, which provided a data set of over 1,000 examinations. Based on the results of these analyses, the method yielded a true-positive rate of 99.3%, a true-negative rate of 97.9%, a false-positive rate of 2.1%, and a false-negative rate of 0.7%. The average minimum detectable concentration (C_m) of mitragynine that reproducibly yielded a match for one of the library spectra on all five instruments was determined to be 342 ng/mL (ppb). This C_m value is a conservative estimate considering that the extraction process was not fully optimized by this study, which was not necessary since the C_m value achieved was well below typical mitragynine concentrations in kratom (1.3–2.3%). The method is ideal (i) for prioritizing samples for additional testing using other more time-consuming laboratory-based techniques needed to detect and quantify mitragynine and (ii) for field use at international mail facility (IMF) satellite laboratories to help interdict kratom and prevent this dangerous product from reaching the U.S. supply chain.     

Evaluation of Suspected Counterfeit Pharmaceutical Tablets Declared to Contain Controlled Substances Using Handheld Raman Spectrometers

This study describes the performance of handheld Raman devices for determining whether suspect pharmaceutical tablets declared to contain controlled substances were consistent with authentic (CWA) or not consistent with authentic (NCWA) tablets using a simple, rapid, field-friendly method capable of being used by nonexperts. Twenty-five authentic products and 84 known NCWA tablets were examined using three “parent” devices for a total of 327 analyses. On average, the parent devices yielded a true pass rate of 100%, a true fail rate of 98.4%, a false pass rate of 1.6%, and a false fail rate of 0%. The methods/libraries were then transferred to 13 identical “daughter” devices, which were used to examine 10 suspect finished dosage forms in duplicate (six known NCWA tablets and four authentic tablets) for a total of 260 measurements. On average, the daughter devices had a true pass rate of 100%, a true fail rate of 95.5%, a false pass rate of 4.5%, and a false fail rate of 0.0%. These data demonstrate that the parent–daughter electronic transfer method was successful, which permits the ability to develop methods in the laboratory that can be seamlessly pushed out to field devices. The methods can then be used to (i) prioritize samples for additional testing using other more time-consuming laboratory-based techniques needed to detect and quantify active ingredients and (ii) help support the interdiction of dangerous tablets at ports of entry, thereby preventing them from reaching the supply chain.     

Reimagining instrument constituencies: the case of conservation policy in Mexico

Policy Sciences - Throughout the developing world, payments for ecosystem services (PES) programs are popular policy instruments that allow those who rely on such amenities as drinking water and...     

The promises and pitfalls of polysemic ideas: ‘One Health’ and antimicrobial resistance policy in Australia and the UK

Policy Sciences - Recent scholarship posits that ambiguous (‘polysemic’) ideas are effective for coalition building between diverse stakeholders: their capacity to be interpreted...     

State,Society, and Informality in Cities of the Global South

Contemporary urbanization in the Global South merits greater attention from scholars of comparative politics. Governance, associational life, and political behavior take distinctive forms in the social and institutional environments created by rapid urbanization, particularly within informal settlements and labor markets. In this special issue, we examine forms of collective action and claims-making in these spaces. We also consider how the state assesses, maps, and responds to the demands of informal sector actors. Tackling questions of citizen and state behavior in these informal urban contexts requires innovative research strategies due to data scarcity and social and institutional complexity. Contributors to this symposium offer novel strategies for addressing these challenges, including the use of informal archives, worksite-based sampling, ethnographic survey design, enforcement process-tracing, and crowd-sourced data.     

Facilitating industrial symbiosis programmes in developing countries: reflections from Gauteng,South Africa

This viewpoint reflects on how to improve the process of introducing facilitated industrial symbiosis programmes (FISPs) to small and medium enterprises (SMEs) in developing countries. Although FISPs are a long-established industrial practice, their formal introduction to SMEs in developing countries has only recently begun, mostly through support from international development agencies. Based partly on anecdotal evidence from Gauteng, South Africa, we identify six key questions which need to be addressed to improve the process of facilitating FISPs.     

Preventing violence through hip hop: an evolutionary perspective

ABSTRACT

For decades Hip Hop cultural practices have been disparaged for allegedly inciting and being responsible for the eruption of urban violence. This assumption, likely built upon pre-existing biases regarding the street culture and ethnic minorities where Hip Hop emerged, ignored how some of the genre’s main elements – particularly freestyle rap, breakin’ or breakdancing and graffiti tagging – initially served the purpose of providing at-risk youths with real alternatives to direct physical violence in their day-to-day lives, and continue do so today. It has also ignored broader analogies with other cross-cultural and cross-species manifestations of similar practices that have served for millennia as effective mechanisms for reducing the likelihood of potentially lethal violence. By presenting these manifestations – namely song dueling and mark making – in comparative terms with Hip Hop’s freestyle song and dance battles and tagging territorial contests, this article seeks to highlight the relevance and potential of Hip Hop for preventing violence while also suggesting a common evolutionary backdrop within the context of strategies aimed at minimizing intraspecific aggression.