Identification of an unknown body by means of osteosynthesis material

The present case describes the identification of an unknown corpse recovered from water by means of two osteosynthesis plates with serial numbers. This method of identification is compared with the pros and cons of other possibilities of identification using medical findings. Although in Western Europe osteosynthesis material is normally removed some months after the operation, autoptic exposure of a suspicious bone may occasionally allow valid, fast and convenient identification of the body, especially if osteosynthesis material with different serial numbers was used.     

From alcohol to liquid ecstasy (GHB)--a survey of old and modern knockout agents. Part 3: gamma-hydroxybutyric acid ("liquid ecstasy")

Currently, gamma-hydroxybutyric acid (GHB/"liquid ecstasy") is frequently abused as a knockout substance. Its detection and the interpretation of the results present numerous problems which are illustrated by case reports. In this context, hair analysis and the increasing significance of gamma-butyrolactone (GBL) are also discussed.     

Why “Trauma-Related Dissociation” Is a Misnomer in Courts: a Critical Analysis of Brand et al. (2017a,b)

Forensic psychologists are sometimes faced with the task of educating triers of fact about the evidential weight of dissociative experiences reported by claimants in litigation procedures. In their two-part essay, Brand et al. (Psychological Injury and Law, 10, 283–297, 2017a; Psychological Injury and Law, 10, 298–312, 2017b) provide advice to experts who find themselves in such situation. We argue that the Brand et al. approach is problematic and might induce confirmation bias in experts. Their approach is not well connected to the extant literature on recovered memories, dissociative amnesia, memory distortions, and symptom validity testing. In some instances, Brand et al. (Psychological Injury and Law, 10, 283–297, 2017a; Psychological Injury and Law, 10, 298–312, 2017b) simplify the current body of knowledge about dissociation; in other instances, they ignore relevant empirical studies to an extent that is worrisome.     

Failing to tell friend from foe: A comment on Wijn et al. (2017)

Behavioural observation programmes are becoming increasingly popular at transportation hubs, sporting events, and other large crowd gatherings. Premise of these programmes is that malicious intention can be accurately deduced from observable behaviour. In a recent article published in this journal, Wijn et al. (2017, Legal and Criminological Psychology, 22, 378–399.) conclude that environmental cues improve the correct detection of participants with malicious intent. This conclusion can and will be interpreted as support for behavioural observation programmes. In this comment, we argue that Wijn and colleagues draw a fundamentally wrong conclusion from their data. What their data show is that malicious intentions could not be detected in any of the conditions. Their findings can therefore not be conceptualized as evidence for behavioural observation programmes. Rather, they add to the growing critique voiced towards such programmes.     

Molecular characterization and Austrian Caucasian population data of the multi-copy Y-chromosomal STR DYS464

DYS464 is a multi-copy STR system with four positions on the Y-chromosome (DYS464a, b, c, and d) which was recently identified and characterized [Forensic Sci. Int. 130 (2002) 97]. The aims of our study were to perform a population study, to estimate the mutation rate and an extensive sequence analysis in order to confirm the nomenclature. Fourteen different alleles were found in an Austrian population sample with an allele length varying from 9 to 19 repeats. All alleles were cloned and sequenced. Alleles 9-19 showed the general repeat structure (CCTT)n...(CCTT)2...(CCTT)3...(CCTT)4...(CCTT)2...(CCTT)2. The nomenclature is based on the number of repeated units of the variable (CCTT)n-stretch only. In 13% of the samples intermediate alleles, namely 14.3A, 14.3B and 15.3 were detected. In these alleles the variable repeat block is interrupted by a CTT motif (14.3A: (CCTT)3CTT(CCTT)11; 14.3B and 15.3: (CCTT)7CTT(CCTT)7/8). A comparison with GenBank entries revealed the existence of a length variant due to a deletion of one cytosine in the 5' flanking region of the first repeat block. We designed an alternative forward primer to circumvent possible ambiguities in the allele designation. A total of 54 different genotypes were identified in 135 men corresponding to a discrimination capacity (DC) of 40% and a gene diversity (GD) of 0.97. These values are much higher than those of other Y-chromosomal short tandem repeats (Y-STRs). DYS464 has the same haplotype diversity (HD) as the combination of the five Y-STR loci with the lowest gene diversities of the Y-STR core set. On the other hand, a combination of the three most diverse loci (DYS464, DYS385 and DYS390) has the same capacity to distinguish between paternal lineages than the complete minimal haplotype (minHT) consisting of eight Y-STR loci. In our population sample the addition of DYS464 to the minHT increases the number of different haplotypes from 110 to 122. The mutation-rate estimate based on the 70 meioses analyzed amounts to 2.86 x 10(-2) (95% confidence interval 3.5 x 10(-3) to 9.95 x 10(-2)). This value is approximately 10 times higher than the average mutation-rate estimate for Y-STRs.     

Duplications of the Y-chromosome specific loci P25 and 92R7 and forensic implications

In the present study, we demonstrate that two commonly used Y-chromosome single nucleotide polymorphisms (SNPs), P25 and 92R7, are paralogous sequence variants (PSVs) originating from segmental duplications and that at least one of the sequence variants in each group of loci is polymorphic. Several methodologies were used in order to detect the SNP alleles and the PSVs of the loci. All results obtained with the various typing techniques supported the conclusion. The allele distributions of the binary markers were analysed in more than 600 males with seven different haplogroups. For P25, the ancestral allele C was found in several samples from different haplogroups. The derived allele A was always present with an additional C variant. Haplogroup P was defined by the derived allele A at the 92R7 locus. However, the ancestral allele G was always associated with an A variant due to the duplication.     

Political interest furthers partisanship in England,Scotland, and Wales

According to much of the literature, partisanship in Britain exercises little independent influence on the vote but merely reflects voters’ prospective and retrospective evaluations of the parties’ performance with regard to their management of the economy, national security, and public services. In this view, partisanship comes close to Fiorina’s model of a “running tally” of political experiences. Similarly, Dalton’s notion of “cognitive mobilization” suggests that seeking out political information should undermine both the need for and the likelihood of party identification. Applying Mixed Markov Latent Class Analysis to the British Election Study Panel 1997–2000, we challenge these perceptions by demonstrating that partisanship is more stable than previously thought, and that high levels of political interest are linked to higher levels of partisanship and possible also to higher levels of stability. This is much more in line with classic ideas about party identification than with “revisionist” critiques of the Michigan model, and with current models of political cognition. Moreover, it suggests that political interest renders affective ties more powerful in stabilizing themselves.