The evaluation of human hand odor volatiles on various textiles: a comparison between contact and noncontact sampling methods

The focus of this study is to compare contact and noncontact human scent collection procedures across an array of textiles (cotton, rayon, polyester, and wool) to determine an optimized collection method for human scent evidence. Six subjects were sampled in triplicate for each textile and collection mode, and the samples were then analyzed through headspace solid-phase micro-extraction in combination with gas chromatography/mass spectrometry (SPME-GC/MS). Contact sampling with cotton material has been shown to be the collection method that yielded the greatest number of volatile compounds and the highest scent mass amounts. Through Spearman rank correlations, it was shown that an individual's scent profile is more reproducible within samples collected on the same textile type than between different materials. Furthermore, contact sampling with cotton fabric demonstrated the greatest reproducibility producing the lowest amount of type I and type II errors with 90.85% of the samples distinguished at the 0.9 match/no match threshold.     

Self-Reported False Confessions and False Guilty Pleas among Offenders with Mental Illness

Persons with mental illness may be at risk for false admissions to police and to prosecutors because of the defining characteristics of mental illness, but potentially because of heightened recidivism rates and increased opportunities. We surveyed 1,249 offenders with mental disorders from six sites about false confessions (FCs) and false guilty pleas (FGPs). Self-reports of FC ranged from 9 to 28%, and FGPs ranged from 27 to 41% depending upon site. False admissions to murder and rape were rarely reported. We also examined differences between those claiming false admissions and those not. Minorities, offenders with lengthier criminal careers, and those who were more symptomatic were more likely to have self-reported false admissions than their counterparts.     

Barriers to the ballot: implications for the development of state and national crime policies

In 2013, the Supreme Court of the United States ruled in Shelby County v. Holder that Section 4(b) of the Voting Rights Act, which included the preclearance formula for determining which state and local jurisdictions needed to obtain federal approval before changing their election laws and voting procedures, was unconstitutional. By requiring federal approval, this provision prevented historically repressive jurisdictions from enacting covert policies to hinder non-whites from voting. The ruling in Shelby County is problematic because methods in use across the country prevent non-white citizens from casting their ballots, leaving their interests unaddressed. As people of color hold different attitudes and views than whites towards specific criminal justice measures, contemporary barriers to the ballot have potential implications for criminal law and policy. Consequently, analyses of two contemporary methods of denying non-whites a voice in government are warranted: felon disenfranchisement and voter identification laws. After considering the disproportionate effects of these laws on non-white voting, the paper reveals the potential harm that may result from Shelby County if similar laws spread to jurisdictions no longer covered by the Voting Rights Act.     

Conditional openness: young people define practices for successful child protection interventions

Taking the reforms of child protection legislation that have occurred since the 1980s as a backdrop, this paper considers young people’s perspectives on the factors that facilitated their engagement with child protection services and the barriers they perceived to effective service delivery. Drawing on findings from a New Zealand study of young people’s experience of multiple service use (child protection, mental health, youth justice and remedial education), the paper identifies that that rather than being ‘resistant’ or ‘hostile’ to statutory child protection intervention, young people reported a ‘conditional openness’. This conditional openness was characterised by three themes: communication; continuity and consistency; and contextual and cultural responsiveness. Interventions with these characteristics activated this conditional openness allowing effective interventions to occur. Using a series of case studies, comprising interviews and agency case file records; the paper considers the experiences of 109 young people (12–17 years) as well as those of the ‘person most knowledgeable;’ an adult nominated by young people because they knew the young person’s situation well.