Can analysis of a small clod of soil help to solve a murder case?

Soil forensics utilizes extensive soil information to answer legal questions and test hypotheses. The main difficulty often is the determination of different variables from a small amount of soil sample collected on the suspect. We developed a sequential mineralogical and chemical analyses to assess a limited quantity of soil vestiges (0.5 g) from a suspect's vehicle (adhered to the outside rear-view mirror and to the left front fender) involved in a murder case and compared them with the surface samples found at the victim's body disposal site at the Graciosa Road, Paraná State, Brazil. All results affirm that the suspect’s vehicle could have been in contact with the edge of the Graciosa Road, approximately the place where the victim’s body was located. As a result of the soil analysis and comparison, the results support the likely contact of the suspect’s vehicle with the crime scene.     

Partisanship in a Social Setting

No factor appears more powerful in explaining how individuals evaluate political information and form political preferences than partisanship. Yet, virtually all work on the effects of partisanship on preference formation neglects the crucial role of social settings. In this study, I examine how social settings can fundamentally change the influence of partisanship on preferences. I demonstrate that, in fact, social settings exert an independent influence over preference formation—one that is even larger than the influence of partisan ambivalence. The central implication of these findings is that, going forward, we cannot fully explore how citizens apply their partisanship in evaluating political information without also accounting for the social settings in which individuals find themselves.     

When Common Identities Decrease Trust: An Experimental Study of Partisan Women

How does sharing a common gender identity affect the relationship between Democratic and Republican women? Social psychological work suggests that common ingroup identities unite competing factions. After closely examining the conditions upon which the common ingroup identity model depends, I argue that opposing partisans who share the superordinate identity of being a woman will not reduce their intergroup biases. Instead, I predict that raising the salience of their gender will increase cross‐party biases. I support my hypotheses with a nationally representative survey of 3,000 adult women and two survey experiments, each with over 1,000 adult women. These findings have direct implications for how women evaluate one another in contentious political settings and, more broadly, for our understanding of when we can and cannot rely upon common identities to bridge the partisan divide.     

Microfinance in online space: a visual analysis of kiva.org

Microfinance practices were originally developed in offline contexts. Modern microfinance practices were based on development models for the financial and social empowerment of the poorest of poor in developing countries. Several of these practices drew from existing traditions of money lending within local communities that were reformed to be in sync with rural development and the empowerment of the underprivileged individual. In present ‘postmodern’ times, microfinance providers are using online tools in the hopes of broadening the reach and extending the advantages provided by such a model of micro-lending and micro-borrowing. In this article, we examine an online peer-to-peer lending and borrowing website, Kiva.org, which uses online social networking tools in microfinance. The study is thus a close look at the actual content of the website with a view to understanding the representational practices of online space through Internet mediated microfinance.     

The Use of a Sequential Extraction Technique to Characterize Soil Trace Evidence Recovered from a Spade in a Murder Case in Brazil*

Soil trace evidence can be useful in criminal investigations. A homicide which had occurred in South Brazil been concluded through the courts with a guilty conviction. A spade with soil traces adhering to it was seized from the confessed killer's house, it having been established that it had been used to bury parts of the victim's body. In the context of this confession, it provided an opportunity to test a protocol of analysis and verify the potential of discriminate soil sample analysis in such case works. This allowed us to test the practice of sequential analysis which had been developed for forensic case works in Brazil, with three sequential extractions: (i) 0.2 mol/L pH 3.0 ammonium oxalate; (ii) dithionite–citrate–bicarbonate; and (iii) 0.5 mol/L NaOH. It was possible to predict the sequence of events related to the homicide by using the sequential extraction technique and to conclude that: (i) the A horizon soil from the burial location of the torso was found to be very similar to the soil samples which had been recovered from the spade, which was able to be established despite there only being a small amount of soil adhering to the spade; (ii) the location where the legs were buried contributed a low amount of soil adhering to the spade. Therefore, it is suggested that, where possible, sequential extractions should be prioritized from a questioned sample to best provide information about the likely sequence of contact places and this test likely scenarios and criminal events.