Can public information programs affect risk perceptions?

This article provides the first controlled evaluation of how different information materials explaining the risks from radon influenced people's perceptions of these risks. Using a panel study, it was possible to observe how stated risk perceptions responded to information about indoor radon concentrations and brochures explaining the radon readings. The findings indicate that risk communication policies can be effective in modifying risk perceptions. Moreover, they have three specific implications for radon policy: (1) Public officials should not adopt strategies that provide minimal risk information to the public as a means of avoiding undue alarm, for this can have the reverse effect; (2) measures of the effectiveness of risk communication will depend on how education and behavior change are defined; (3) categorical guidelines about risk without quantitative information can lead people to treat the levels as thresholds, creating an artificial discontinuity in their responses to small changes in risk perceptions.     

Policy,Practicalities, and PACE s. 24: The Subsuming of the Necessity Criteria in Arrest Decision Making by Frontline Police Officers

PACE, as amended by the Serious Organised Crime and Police Act 2005, establishes a complex framework of factors that police officers must consider during arrest decision making. Officers must possess a reason to arrest, it must be necessary to arrest for that reason, and they must give at least a ‘cursory consideration’ to alternatives. Based on a four‐year ethnographic study of frontline officers from two forces in Northern England, we argue that the 2005 reforms have not achieved their aims. The new regime tasks officers with undertaking a complex legal assessment prior to arrest, but officers are often confused about the necessity criteria which, moreover, is typically a minor consideration in contrast to demanding practical and policy pressures. This means that unlawful and non‐human‐rights‐compliant arrests continue to be regularly made and, equally significantly, many suspects are escaping the criminal justice system because officers are not considering arrest alternatives.     

Public Mass Murderers and Federal Mental Health Background Checks

The litany of public mass murders, from Aurora, Newtown, Charleston, Las Vegas, and Parkland to less well‐known incidents that occur yearly, has focused national attention on federally mandated mental health background checks of prospective gun purchasers. The call has been to put more gun‐disqualifying mental health records into the National Instant Criminal Background Check System database to prevent “deranged” murderers from buying guns and running amok. Our study examines whether increasing the robustness of the mental health background database will likely prevent potential public mass murderers from buying guns. Building on research that shows that serious mental illness contributes little to the risk of interpersonal violence and, further, that few persons with serious mental illness acquire gun‐disqualifying mental health records, we examine whether public mass murderers are among the small percentage of those with serious mental illness who do have gun‐disqualifying mental health records. Using a large sample of 106 US offenders who used a firearm to commit a public mass murder from 1990 to 2014, we find that half of the offenders had a history of mental illness or mental health treatment but that less than 5 percent had gun‐disqualifying mental health records. Implications of these findings and recommendations for further research are discussed.     

Identifying the Needs of American Indian Women Who Sought Shelter: A Practitioner-Researcher Partnership

American Indian women across all ages are significantly more likely than women of other ethnic groups to be victims of domestic violence, sexual assault, and stalking. Despite their increased risk of interpersonal violence, there are few published studies or reports that explicitly examine the needs of victimized American Indian women. Therefore, both researchers and service providers know very little about the multifaceted needs of victimized American Indian women and whether current community services are meeting the needs of victimized native women. Identifying such needs is a logical next step so that victim service agencies can develop and effectively provide services tailored to victimized American Indian women. This commentary addresses these gaps by (1) identifying the needs of American Indian women in a domestic violence shelter in Arizona, and (2) highlighting the researcher-practitioner partnership that made it possible to gain access to these victims. Drawing on survey responses from 37 American Indian female clients and interviews with 10 staff members, the findings reveal that the domestic violence agency service provider is meeting many of their needs. Findings also indicate that clients have a wide variety of specific personal needs (e.g., safety, housing, transportation), needs relating to their children (e.g., safety, education, socialization), community needs (e.g., relating to their tribe), as well as legal needs (e.g., help obtaining a restraining order or divorce). These multifaceted needs are discussed and specific recommendations are provided for successful researcher-practitioner partnerships.     

Validation of Tool Mark Comparisons Obtained Using a Quantitative,Comparative, Statistical Algorithm

Abstract: A statistical analysis and computational algorithm for comparing pairs of tool marks via profilometry data is described. Empirical validation of the method is established through experiments based on tool marks made at selected fixed angles from 50 sequentially manufactured screwdriver tips. Results obtained from three different comparison scenarios are presented and are in agreement with experiential knowledge possessed by practicing examiners. Further comparisons between scores produced by the algorithm and visual assessments of the same tool mark pairs by professional tool mark examiners in a blind study in general show good agreement between the algorithm and human experts. In specific instances where the algorithm had difficulty in assessing a particular comparison pair, results obtained during the collaborative study with professional examiners suggest ways in which algorithm performance may be improved. It is concluded that the addition of contextual information when inputting data into the algorithm should result in better performance.