Application of mtDNA SNP analysis in forensic casework

In this study six forensic cases are presented where the routine analysis of samples for short tandem repeats (STRs) failed. The sequencing of the mitochondrial hypervariable region I (HVR I) also failed. Nevertheless, it was possible to analyse the samples with mitochondrial DNA (mtDNA) single nucleotide polymorphisms (SNPs) via SNaPshot technique. The age of the analysed samples ranged from 2 months to 1400 years. Saliva-, blood-, sperm-, hair-, tooth- and bone-samples were investigated. Furthermore the mtDNA SNP analysis of a forensic case sample showing a mixed stain profile is presented. It was possible to discriminate two different haplogroups in this mixed-person stain. If compared to another mtDNA SNP profile that was found in a hair, the discriminating SNPs of the hair were as well found in the mixed-person stain.To disburden the SNP analysis in forensic casework, haplogroup assignment criteria and quality criteria for mtDNA SNaPshot analysis are announced.     

Children's reporting patterns after witnessing homicidal violence – the effect of repeated experience and repeated interviews

For both legal and clinical purposes, it is of importance to study children's memories and reports of stressful events. The present study investigated the reporting patterns of 83 children who had witnessed homicidal violence, which is considered to be a highly stressful experience. More specifically, we explored the possible effects of prior violence exposure and of repeated questioning on the amount of details reported. Results showed that the majority of children provided detailed reports about the homicidal violence they had witnessed, including details concerning what happened before, during, and after the violent act. The children provided detailed and vivid testimonies from their experiences, whether they witnessed the event for the first time or had prior experience of witnessing severe violence against the victim by the perpetrator. Children with no prior experience of repeated violence who underwent repeated interviews provided more details than those interviewed once. The present data indicate that children are competent witnesses when questioned in legal contexts after having been exposed to extremely stressful events. These findings have implications for research related to children's memories and reporting of traumatic experiences, as well as practical implications for future treatment and evaluation of children's testimonies.     

The Impact of Parties and Elections on Municipal Debt Policy in Mexico

Opportunistic electoral fiscal policy cycle theory suggests that all subnational officials will raise fiscal spending during elections. Ideological partisan fiscal policy cycle theory suggests that only left‐leaning governments will raise election year fiscal spending, with right‐leaning parties choosing the reverse. This article assesses which of these competing logics applies to debt policy choices. Cross‐sectional time‐series analysis of yearly loan acquisition across Mexican municipalities—on statistically matched municipal subsamples to balance creditworthiness across left‐ and right‐leaning governments—shows that all parties engage in electoral policy cycles but not in the way originally thought. It also shows that different parties favored different types of loans, although not always according to partisan predictions. Both electoral and partisan logics thus shape debt policy decisions—in contrast to fiscal policy where these logics are mutually exclusive—because debt policy involves decisions on multiple dimensions, about the total and type of loans.     

Influences of Neighborhood Context,Individual History and Parenting Behavior on Recidivism Among Juvenile Offenders

This study examined the effects of neighborhood context on juvenile recidivism to determine if neighborhoods influence the likelihood of reoffending. Although a large body of literature exists regarding the impact of environmental factors on delinquency, very little is known about the effects of these factors on juvenile recidivism. The sample analyzed includes 7,061 delinquent male juveniles committed to community-based programs in Philadelphia, of which 74% are Black, 13% Hispanic, and 11% White. Since sample youths were nested in neighborhoods, a hierarchical generalized linear model was employed to predict recidivism across three general categories of recidivism offenses: drug, violent, and property. Results indicate that predictors vary across the types of offenses and that drug offending differs from property and violent offending. Neighborhood-level factors were found to influence drug offense recidivism, but were not significant predictors of violent offenses, property offenses, or an aggregated recidivism measure, despite contrary expectations. Implications stemming from the finding that neighborhood context influences only juvenile drug recidivism are discussed.     

Divergent Perspectives: Exploring a Multiple Informant Approach to Cyberbullying Victimization and Perpetration

The present research adopts a multiple informant approach to identify victims and perpetrators of cyberbullying. Similar approaches have been successfully applied in the field of traditional bullying, and they are highly relevant for studying cyberbullying as well. Three informants can provide key perspectives on cyberbullying incidents: victims, perpetrators, and bystanders. To collect data on these actors, all eighth-grade students in 11 secondary schools were invited to participate in a survey. In total 1458 respondents completed peer-nomination questions on cyberbullying involvement. The results indicated that the prevalence of cyberbullying varied depending on the type of informants that was consulted. In addition, limited overlap was observed between the reports of different informants, resulting in different profiles of victims and perpetrators, depending on the informants that identified them. In sum, different informants tended to have divergent views on cyberbullying, which has important implications. It warrants accurate reporting and critical reflection on the sources of data in cyberbullying research. Moreover, it demonstrates the need to study a more diverse set of informants to advance the understanding of cyberbullying and to enhance prevention efforts.