Analysis of Mitochondrial DNA from a Burned,Ninhydrin‐Treated Paper Towel

Contact‐based evidence is likely to have limited quantities of DNA and may yield mixed profiles due to preexisting or contaminating DNA. In a recent arson investigation, a paper towel was collected and used as circumstantial evidence. The paper towel was partially burned and was likely set on fire with flammable liquid. As part of the investigation, the paper towel was treated with ninhydrin to visualize fingerprint evidence. Initial DNA analysis of two swabs was negative for short tandem repeat (STR) markers and revealed a mixture of mitochondrial DNA (mtDNA). Analysis of 13 additional cuttings yielded four more mixed profiles, but also two samples with a common single‐source profile. The single‐source mtDNA profile matched that of the primary suspect in the case. Thus, even if initial mtDNA analysis yields a mixed profile, a sampling strategy involving multiple locations can improve the chance of obtaining valuable single‐source mtDNA profiles from compromised evidence in criminal casework.     

Comment on Parkinson and Cashmore's (2015) Research and Proposal for Reforming Child Custody Relocation Law: Child Custody Evaluator and Psychological Perspecitve

Parkinson and Cashmore ( 2015 ) described their innovative, qualitative, and longitudinal research program on the experience of Australian families involved in relocation family law litigation. This constructive comment discusses the value and limitations of their main findings. Parkinson and Cashmore's approach is contrasted with the excellent quantitative research on the effects of residential mobility on children of divorce. The author disagrees with Parkinson and Cashmore's position of opposing the use of relocation factors in statute and/or case law so as to not hinder the exercise of judicial discretion any further, but agrees with their integration of the least detrimental alternative concept into a relocation analysis.     

Longitudinal Associations between Social Relationships and Alcohol Use from Adolescence into Young Adulthood: The Role of Religiousness

Journal of Youth and Adolescence - As adolescence is a time characterized by rapid changes in social relationships as well as an increase in risk-taking behaviors, this prospective longitudinal...