The influence of footwear sole hardness on slip initiation in young adults

Slips occur when the friction demand of an individual exceeds the friction available from the shoe/floor interface. Shoe sole hardness is one of the factors thought to influence friction demand and available friction. The purpose of this study was to determine the influence of footwear sole hardness on the probability of slip initiation. Forty young adults were randomized into a hard or soft sole group. Slip events during the slippery floor trials were documented using a motion analysis system. The proportion of slip events in the hard sole group was greater than that in the soft sole group. The difference between utilized and available friction accurately predicted 90% of slip outcomes. Our data support the premise that individuals wearing shoes with harder soles are at greater risk for slipping. The results of this study suggest that shoe sole hardness should be considered when designing footwear aimed at decreasing slip risk.     

Development and validation of videotaped scenarios: a method for targeting specific participant groups

Researchers using scenarios often neglect to validate perceived content and salience of embedded stimuli specifically with intended participants, even when such meaning is integral to the study. For example, sex and aggression stimuli are heavily influenced by culture, so participants may not perceive what researchers intended in sexual aggression scenarios. Using four studies, the authors describe the method of scenario validation to produce two videos assessing alcohol-related sexual aggression. Both videos are identical except for the presence in one video of antiforce cues that are extremely salient to the young heterosexual men. Focus groups and questionnaires validate these men's perceptions that (a) the woman was sexually interested, (b) the sexual cues were salient, (c) the antiforce cues were salient (antiaggression video only), and (e) these antiforce cues inhibited acceptance of forced sex. Results show the value of carefully selecting and validating content when assessing socially volatile variables and provide a useful template for developing culturally valid scenarios.     

The impact of state sentencing policies on the U.S. prison population

This article examines the aggregate effects of neoclassical sentencing reforms on three often contested outcomes of these reforms. The rate of new court commitments, the average length of time inmates serve, and prison population rates across the fifty U.S. states and the District of Columbia are examined. Data from 1973 to 1998 across these jurisdictions are analyzed using hierarchical multivariate linear models (HMLM). Results show that on the aggregate, sentencing reforms are not directly related to changes in state prison populations; however, abolition of parole is negatively associated with state prison population rates. Two types of sentencing reforms, the voluntary sentencing guidelines and the ‘three-strikes’ laws are indirectly related to changes in prison populations and have opposite influences on rates of new court commitments. Of six sentencing practices examined, not one is associated with length of incarceration. These results do not support the contention that neoclassical changes to the nation's sentence policies account for the rapid increase in the state prison populations between the early 1970s and late 1990s.     

Court outcomes for clients referred to a community mental health court liaison service

Court liaison and diversion services come in a variety of forms, but the similarities and differences between these services are not well characterized. Findings from a six-year audit of the Newcastle (Australia) Mental Health Court Liaison (MHCL) service are reported, including client characteristics, offence and service contact profiles, court outcomes, and interrelationships among these variables. During the audit period, there were 2383 service episodes by 1858 clients (1478 males, 380 females). Drug and alcohol disorders (40.9%) and psychotic disorders (17.0%) were the most prevalent mental health problems, while assault (23.1%), theft (23.1%), offences against justice procedures (15.4%), driving offences (13.4%) and malicious damage to property (8.3%) were the most frequently recorded charges. Among service episodes with a finalized court outcome, 70.0% involved a punishment (bond: 49.5%; jail term: 29.7%). Females were less likely to be punished, but more likely to have their case dismissed under sections of the relevant Act that required further assessment and monitoring. Being married, or having an adjustment or drug and alcohol disorder, were also associated with an increased likelihood of punishment, while clients with a psychotic or bipolar disorder were less likely to be punished. Among clients who were punished, those referred from inpatient mental health services were more likely to receive a non-jail punishment, while unemployed clients were more likely to be jailed. A substantial proportion of clients had court outcomes that required an ongoing involvement with local mental health services. By being part of community mental health services, our MHCL service is able to work efficiently and effectively with the criminal justice system, while facilitating ready access to existing mental health services and continuation of care.     

Reducing Sexual Orientation Discrimination: Experimental Evidence from Basic Information Treatments

We study basic information treatments regarding sexual orientation using randomized experiments in three countries with strong and widespread anti-gay attitudes: Serbia, Turkey, and Ukraine. Participants who received information about the economic costs to society of sexual orientation discrimination were significantly more likely than those in a control group to support equal employment opportunities based on sexual orientation. Information that the World Health Organization (WHO) does not regard homosexuality as a mental illness increased social acceptance of sexual minorities, but only for those who reported trust in the WHO. Our results have important implications for policymakers aiming to expand the rights of lesbian, gay, and bisexual people worldwide.     

As Violence Unfolds: A Space–Time Study of Situational Triggers of Violent Victimization Among Urban Youth

This study clarifies three important issues regarding situational or opportunity theories of victimization: (1) whether engaging in risk activities triggers violent assault during specific, often fleeting moments, (2) how environmental settings along individuals’ daily paths affect their risk of violent assault, and (3) whether situational triggers have differential effects on violent assault during the day versus night. Using an innovative GIS-assisted interview technique, 298 young male violent assault victims in Philadelphia, PA described their activity paths over the course of the day of being assaulted. Case-crossover analyses compared each subject’s exposure status at the time of assault with his own statuses earlier in the day (stratified by daytime and nighttime). Being at an outdoor/public space, conducting unstructured activities, and absence of guardians increase the likelihood of violent victimization at a fine spatial–temporal scale at both daytime and nighttime. Yet, the presence of friends and environmental characteristics have differential effects on violent victimization at daytime versus nighttime. Moreover, individual risk activities appeared to exhibit better predictive performance than did environmental characteristics in our space–time situational analyses. This study demonstrates the value of documenting how individuals navigate their daily activity space, and ultimately advances our understanding of youth violence from a real-time, real-life standpoint.     

School Shootings and Security Lock-downs: Myths,Positive School Climates,and Safer Campuses

School shooting tragedies and the juvenile justice system’s movement toward a retributive and punitive framework gravely impacted how primary and secondary school students, disproportionately urban districts, used security measures to lock down campuses and build “fortress-like” schools. This iteration of control on school campuses emerged in tandem with the most recent generation’s zero tolerance approach to student violence and problems; a policy widely regarded as ineffective in urban, suburban, and rural districts. As school shootings continue to impact state legislative action and public reactions to school management, this paper takes a critical approach to school security policies and reviews the evidence on the risk for school violence and how to move away from student control approaches that do not improve school safety. Instead, the incorporation of prosocial education and school engagement efforts finds that school and student safety is improved. These, and related approaches to student body management, decreases campus violence and may also minimize the risk of some school shootings - as rare as these tragic incidents are across the nation’s schools. The interplay of schools, students, and the juvenile and family courts is ongoing. Knowing how school districts can best approach their campus environments, safety, and learning is important for school social workers and court personnel because of how often these systems work, or do not work, together.     

The Impact of Partisan Gerrymandering on Political Parties

The relationship between votes and seats in the legislature lies at the heart of democratic governance. However, there has been little previous work on the downstream effects of partisan gerrymandering on the health of political parties. In this study, we conduct a comprehensive examination of the impact of partisan advantage in the districting process on an array of downstream outcomes. We find that districting bias impedes numerous party functions at both the congressional and state house levels. Candidates are less likely to contest districts when their party is disadvantaged by a districting plan. Candidates that do choose to run are more likely to have weak resumes. Donors are less willing to contribute money. And ordinary voters are less apt to support the targeted party. These results suggest that gerrymandering has long-term effects on the health of the democratic process beyond simply costing or gaining parties seats in the legislature.     

The impact of brain injury on within-individual changes in moral disengagement: implications for criminal and antisocial behavior

Journal of Experimental Criminology - The current study aims to further unpack the link between head injury and criminal behavior by examining the association between brain injury and changes in...