Decomposing Human Blood: Canine Detection Odor Signature and Volatile Organic Compounds

The admissibility of human “odor mortis” discrimination in courts depends on the lack of comprehension of volatile organic compounds (VOCs) during the human decay process and of the lack in standardized procedures in training cadaver dogs. Blood was collected from four young people who died from traffic accidents and analyzed using HS‐SPME/GC‐MS at different decompositional stages. Two dogs, professionally trained, were tested to exactly locate blood samples, for each time point of the experiment. We found a long list of VOCs which varied from fresh to decomposed blood samples, showing differences in specific compounds. Dog performance showed a positive predictive value between 98.96% and 100% for DOG A, and between 99.47% and 100% for DOG B. Our findings demonstrated that decomposing human blood is a good source of VOCs and a good target for canine training.     

Recalling an Unfair Experience Reduces Adolescents’ Dishonest Behavioral Intentions: The Mediating Role of Justice Sensitivity

Injustice experiences are likely to have a strong impact on—adolescents' life. However, individuals differ in how they perceive and respond to injustice depending on their justice sensitivity. Whereas several studies analyzed the relationships between justice sensitivity and antisocial behaviors in adult samples, little is known about this relationship among adolescents. The aim of the present experimental study is to expand knowledge on the antecedents and effects of justice sensitivity from the Victim (i.e., JS-Victim) and Others (i.e., JS-Observer, Perpetrator, and Beneficiary) perspective, particularly with regard to its relationship to willingness to act in dishonest behavioral intentions (e.g., stealing money or objects from classmates, teachers, or strangers). The study involved 369 Italian students (52% males; M _age = 16.64, SD = 1.78). We examined the role of justice sensitivity in the relationship between the recall of unfair, fair, or neutral episodes, and the consequent willingness to perform dishonest behaviors. Results demonstrate that recalling unfair (vs. fair or neutral) episodes leads to an increase in JS-Others, which in turn decreased willingness to behave dishonestly. Conversely, JS-Victim did not mediate the relationship between the recall of unfair episodes and intentions to behave dishonestly. The present findings suggest that during adolescence JS-Others might act as a protective factor against dishonest behaviors.     

Reference Points and Democratic Backsliding

We propose a theory of democratic backsliding where citizens' retrospective assessment of an incumbent politician depends on expectations that are endogenous to the incumbent's behaviour. We show that democratic backsliding can occur even when most citizens and most politicians intrinsically value democracy. By challenging norms of democracy, an incumbent can lower citizens' expectations; by not doubling down on this challenge, he can then beat this lowered standard. As a result, gradual backsliding can actually enhance an incumbent's popular support not despite but because of citizens' opposition to backsliding. This mechanism can only arise when citizens are uncertain enough about incumbents' preferences (e.g. owing to programmatically weak parties). Mass polarization, instead, can reduce the occurrence of backsliding while simultaneously increasing its severity.     

Does Livestock Ownership Affect Animal Source Foods Consumption and Child Nutritional Status? Evidence from Rural Uganda

Abstract

In many developing countries consumption of animal source foods (ASF) among the poor is still at a level where increasing its share in total caloric intake may have many positive nutritional benefits. This paper explores whether ownership of different livestock species increases consumption of ASF and helps improving child nutritional status, finding some evidence that both food consumption patterns and nutritional outcomes may be affected by livestock ownership in rural Uganda. Our results are suggestive that promoting (small) livestock ownership has the potential for affecting human nutrition in rural Uganda, but further research is needed to more precisely estimate the direction and size of these effects.     

Two Critical Passages on the Road to Mercosur

This article challenges two traditional interpretations of the genesis of Mercosur. First, the literature is evenly divided among those who trace back the beginning of the process to the military administrations of Brazil and Argentina, and those who entirely credit their newly democratic administrations. By contrast, this paper argues that integration was initially discussed in a situation of regime asymmetry, Argentina having already returned to democracy and Brazil being still in the final stage of transition. Second, the creation of the common market is generally associated with the 1988 Treaty of Integration signed by Presidents Alfonsín and Sarney of Argentina and Brazil, respectively, while Presidents Menem and Collor are deemed to have simply reduced the period for its implementation from ten to five years. By contrast, this article suggests that in 1988 the project of a common market was still just an aspiration and that in fact that treaty only established a free trade area, its actual progression into a common market being undertaken by the latter two leaders. The first argument tempers the democratic mysticism surrounding integration, the second suggests a partial rehabilitation of the now discredited neoliberal presidents.     

Forensic genetic analysis of insect gut contents

Entomological evidence is most often used for estimating the postmortem interval, but fly larvae can also be a source of vertebrate DNA. Forensic analysis of DNA recovered from a larva's gut can be used to identify what the larva had been feeding on. During our previous research studies, we used the same DNA extraction for the dual purpose of identifying the insect species and associating a maggot with its last meal. In our experience, we have encountered several situations where this method for associating a maggot with a corpse would have been useful, such as removal of remains from a suspected crime scene, an alternative food source is nearby the scene or the body, and a chain-of-evidence dispute. However, since maggot gut content analysis is a quite brand-new area of study, many of the limitations of the technique have not yet been explored. The results of our most recent research studies suggest that third-instar larvae actively feeding on the corpse can be considered the best source of human DNA, better than postfeeding or starved larvae. In this paper, the state of the art of forensic genetic analysis of maggot gut contents is reviewed.     

Procedural Choice in Majoritarian Organizations

A puzzling feature of self‐governing organizations is persistent majority support for restrictive, seemingly nonmajoritarian, procedures (e.g., chairs and committees). This article provides a theory of self‐enforcing majoritarian commitment to restrictive procedures. We ask (1) why majorities consent to restrictive procedures in the first place, (2) why restrictive procedures survive challenges thereafter, and (3) with what policy consequences. In the model, a risk‐averse majority allocates procedural rights to increase procedural efficiency (i.e., reduce the procedural uncertainty of free‐for‐all bargaining). An equilibrium procedure is generally asymmetric and restrictive, generating nonmajoritarian policy bias. Still, a majority may persist in endorsing it so as to avoid amplifying procedural and policy uncertainty.