Analyzing the Psychological and Social Contents of Evidence—Experimental Comparison between Guessing,Naturalistic Observation,and Systematic Analysis

To improve inferences about psychological and social evidence contained in pictures and texts, a five‐step algorithm—Systematic Analysis (SA)—was devised. It combines basic principles of interpretation in forensic science, providing a comprehensive record of signs of evidence. Criminal justice professionals evaluated the usefulness of SA. Effects of applying SA were tested experimentally with 41 subjects, compared to 39 subjects observing naturally (naturalistic observation) and 47 subjects guessing intuitively intuitive guessing group. After being trained in SA, prosecutors and police detectives (N = 217) attributed it a good usefulness for criminal investigation. Subjects (graduate students) using SA found significantly more details about four test cases than those observing naturally (Cohen's d = 0.58). Subjects who learned SA well abducted significantly better hypotheses than those who observed naturally or who guessed intuitively. Internal validity of SA was α = 0.74. Applying SA improved observation significantly and reduced confirmation bias.     

Identification and characterization of JWH-122 used as new ingredient in "Spice-like" herbal incenses

This preliminary communication describes seven babies with β-amyloid precursor protein (βAPP) positive axonal swellings in nerve roots at multiple levels of the spinal cord. All seven babies died of natural causes. Two died in utero providing evidence for nerve root injury in the absence of trauma, two died within one day of birth and the possibility of birth related injury has to be considered. Three babies were over one month of age and had no history or pathological evidence of trauma. These findings show that if axonal injury is carefully sought in every infant death, not just in babies where trauma is suspected, it will be found in a proportion of babies dying from natural diseases. While spinal nerve root axonal injury in infants may suggest trauma, it is not, in itself, diagnostic of trauma.     

Results of a collaborative study of the EDNAP group regarding mitochondrial DNA heteroplasmy and segregation in hair shafts

A collaborative exercise was carried out by the European DNA Profiling Group (EDNAP) in order to evaluate the distribution of mitochondrial DNA (mtDNA) heteroplasmy amongst the hairs of an individual who displays point heteroplasmy in blood and buccal cells. A second aim of the exercise was to study reproducibility of mtDNA sequencing of hairs between laboratories using differing chemistries, further to the first mtDNA reproducibility study carried out by the EDNAP group. Laboratories were asked to type 2 sections from each of 10 hairs, such that each hair was typed by at least two laboratories. Ten laboratories participated in the study, and a total of 55 hairs were typed. The results showed that the C/T point heteroplasmy observed in blood and buccal cells at position 16234 segregated differentially between hairs, such that some hairs showed only C, others only T and the remainder, C/T heteroplasmy at varying ratios. Additionally, differential segregation of heteroplasmic variants was confirmed in independent extracts at positions 16093 and the poly(C) tract at 302-309, whilst a complete A-G transition was confirmed at position 16129 in one hair. Heteroplasmy was observed at position 16195 on both strands of a single extract from one hair segment, but was not observed in the extracts from any other segment of the same hair. Similarly, heteroplasmy at position 16304 was observed on both strands of a single extract from one hair. Additional variants at positions 73, 249 and the HVII poly(C) region were reported by one laboratory; as these were not confirmed in independent extracts, the possibility of contamination cannot be excluded. Additionally, the electrophoresis and detection equipment used by this laboratory was different to those of the other laboratories, and the discrepancies at position 249 and the HVII poly(C) region appear to be due to reading errors that may be associated with this technology. The results, and their implications for forensic mtDNA typing, are discussed in the light of the biology of hair formation.     

Deep history and international security: social conditions and competition,militancy and violence in West Africa

Concern about terrorism in, and from, West Africa has prompted both military responses and criticisms of these. Criticism has focused on ‘hegemonic’ international attention to the region, the inappropriateness of a military and a misplaced focus on religion, and specifically Islam, where a range of ethnic, social, economic and historical problems are said to have been the real factors incubating radicalisation and violence—although empirical evidence to support this assertion was absent. We argue that a more nuanced and variegated approach is needed. On one side, contrary to the critics, we show: why international attention is warranted and inevitable, with a specific link to international terrorism (as well as local contexts) since 2001, and why a militarised approach is also relevant; why Islam and a religious focus cannot be completely ignored in assessing militancy and violence in West Africa. On the other, we use original qualitative empirical research to explore beliefs, values and attitudes in the region, which reveals that, across the region, a variety of social issues and perceptions of history are regarded as being salient factors in radicalisation—whether or not that radicalisation leads to violence. Notable among these are a ‘youth bulge’ and youth disaffection and perceptions (no matter their empirical accuracy) concerning the ‘deep history’ of colonialism in the region.