Rob Tillyer

Reexamining the Correlates of Adolescent Violent Victimization: The Importance of Exposure, Guardianship, and Target Characteristics

The present study examines the relative contributions of various theoretical constructs to violent victimization by operationalizing multiple measures of exposure to motivated offenders, guardianship, and target characteristics. Using a nationally representative sample of American adolescents, we conducted principal components factor analysis and logistic regression analysis to examine whether such measures do in fact represent empirically distinct constructs and if they are each correlated with violent victimization risk. Findings suggest that both nondelinquent and delinquent routine activities which expose adolescents to motivated offenders increase risk of victimization. In terms of guardianship, parental attachment appears to protect adolescents from victimization, although direct parental control actually increases risk. Finally, only one of four target characteristics—psychological vulnerability—was significantly associated with violent victimization risk. We discuss the implications for theory and future research in light of the findings.

The Impact of Drivers’ Race, Gender, and Age During Traffic Stops Assessing Interaction Terms and the Social Conditioning Model

Recent research has demonstrated that minority drivers receive disparate traffic stop outcomes compared with similarly situated White drivers. This research, however, is often not grounded within a theoretical framework and fails to examine specific combinations of driver demographics. This study addresses those shortcomings by examining research questions based on the social conditioning model and investigating the relationship between specific combinations of drivers’ race/ethnicity, gender, and age, and traffic stop outcomes. Using alternative measures of stop outcomes and robust official traffic stop data collected from a state law enforcement agency, the results demonstrate that warnings and citations, but not arrests, are differentially issued to young, Black male drivers. The findings also confirm the influence of legal factors on police decision making during traffic stops. Research and policy implications are discussed.

The Discretion to Search: A Multilevel Examination of Driver Demographics and Officer Characteristics

Understanding police decision making has been a priority for policing scholars since the middle part of the 20th century. Recent emphasis has focused on examining the decision to search drivers and vehicles during pedestrian and traffic stops. The current study contributes to this body of literature by testing a series of hypotheses based on Skolnick’s notion of “symbolic assailants” and Smith and Alpert’s social conditioning model. Using data gathered from a large, Midwestern municipal jurisdiction over an 8-month period during 2005 and 2006, we estimate a series of hierarchical models to assess the relationship between discretionary searches and driver, vehicle, stop, and officer characteristics. Results indicate that specific driver groups including young, Black males are more likely to be searched for discretionary reasons. This relationship is further conditioned by officer assignment. Policy implications and suggestions for future research are also discussed.

Best practices in vehicle stop data collection and analysis

Purpose – Within the last 15 years, law enforcement agencies have increased their collection of data on vehicle stops. A variety of resource guides, research reports, and peer‐reviewed articles have outlined the methods used to collect these data and conduct analyses. This literature is spread across numerous publications and can be cumbersome to summarize for practical use by practitioners and academics. This article seeks to fill this gap by detailing the current best practices in vehicle stop data collection and analysis in state police agencies.Design/methodology/approach – The article summarizes the data collection techniques used to assist in identifying racial/ethnic disparities in vehicle stops. Specifically, questions concerning why, when, how, and what data should be collected are addressed. The most common data analysis techniques for vehicle stops are offered, including an evaluation of common benchmarking techniques and their ability to measure at‐risk drivers. Vehicle stop outcome analyses a...

Recognizing the need for prisoner input in correctional research: Observations from an in-prison driving while intoxicated reduction program evaluation

Although evaluation has become a common component of substance abuse treatment programs in correctional settings, few evaluation designs use a mixed-methodological approach and even fewer incorporate participant interviews in the data collection process. This oversight is problematic for a number of reasons, one of which is the uniquely disadvantaged position of the subjects under study (i.e., prisoners). Using data from an evaluation of an in-prison alcohol treatment program, this article illustrates the utility of the qualitative interview in correctional research. Findings suggest that interviews are capable of providing information otherwise inaccessible through quantitative designs and identifying process and management barriers to optimal program operation. Discussion centers on implications for policy and practice enhancement.

Defending the Homeland: Judicial Sentencing Practices for Federal Immigration Offenses

In the last decade, immigration prosecutions in federal court have increased 165%, with immigration offenses comprising over 28% of the federal criminal caseload in 2008. Despite this increase, research has yet to fully examine the sentencing outcomes for these offenders. Exploration of sentencing outcomes for immigration offenders is particularly salient due to the racial/ethnic composition of these defendants and the documented history of disparate treatment of minorities at this decision point. To explicate these issues, we examine the sentence length of immigration cases to assess the impact of legal, extra-legal, and case-processing factors. We further disaggregate by offense type to explore if correlates of sentencing are consistent across specific categories of immigration violations. Finally, we examine southwestern border districts, which process over 70% of all cases, to assess their specific sentencing practices. Model results, theoretical implications, and avenues for future research are also discussed.

Differential treatment of female defendants: does criminal history moderate the effect of gender on sentence length in federal narcotics cases?

Past research indicates that men and women are treated differently at the sentencing phase, but the specifics of this relationship have not been fully explicated. The current study draws on the chivalry and evil woman hypotheses to examine how a defendant’s gender may interact with criminal history to affect sentence length in federal narcotics cases. Results indicate that gender’s effect on sentence length is nuanced, complex, and dependent on a defendant’s criminal history score; thus, conditional support is found for both the chivalry and evil woman hypotheses. Specifically, female defendants with lower criminal history scores received more lenient treatment (relative to male defendants) whereas those with higher criminal history scores received more severe sentences. These findings suggest that further exploration of interactions between extralegal and legal factors is necessary to uncover the complex ways in which gender influences court outcomes.

From the Officer’s Perspective: A Multilevel Examination of Citizens’ Demeanor during Traffic Stops

Over the past 60 years, a substantial body of research has considered the influence of citizens’ demeanor on police behavior; and more recently, the correlates of citizens’ demeanor. This study advances our understanding of the demeanor construct by measuring officers’ perceptions of citizens’ disrespect, non‐compliance, and resistance during traffic stops. Using multilevel statistical models, we examine the correlates of citizens’ demeanor and assess the racial differences in these perceptions. The findings demonstrate that officers’ perceptions of citizens’ demeanor vary across racial/ethnic groups, after controlling for other relevant factors. Although White officers were significantly more likely than Black officers to classify drivers as disrespectful, Black and White officers were equally likely to report drivers as displaying behaviors that were non‐compliant and/or verbally resistant. Black drivers were significantly more likely to be reported as disrespectful, non‐compliant, and/or resistant, regardless of the officers’ race. The implications for future research and policy are discussed.

Searching for Equilibrium: The Tenuous Nature of the Outcome Test

Based on Engels critique of the outcome test and Persico and Todds response, the underlying assumptions critical to the outcome test are summarized and discussed. It is argued that many of these assumptions are not met when applied to police search data. The key underlying assumption—the principle of equilibrium—is examined in detail, and several additional concerns are raised. Thereafter, the proper interpretations of outcome test analyses are reiterated, and discussion regarding the types of racial bias demonstrated by these analyses is further explored.

Caught in Their Own Speed Trap: The Intersection of Speed Enforcement Policy, Police Legitimacy, and Decision Acceptance

Empirical work examining the effects of police legitimacy has primarily focused on traffic stop procedures with less attention given to traffic enforcement policies. The current study takes advantage of a natural experiment in which a rural town with a strict speed enforcement policy was labeled a “speed trap” through the introduction of a billboard advertisement funded by the American Automobile Association. Drawing on theories of police legitimacy, we hypothesize the label will result in an abrupt-permanent increase in speeding citation contestation rates, despite the fact that the billboard actually increases predictability of citation issuance. Results of an interrupted time-series analysis indicate statistically significant abrupt-permanent increases in the speeding citation contestation rates for the intervention city. Further analyses reveal that significant intervention effects are confined to drivers with higher opportunity to contest tickets (in-state drivers) and to majority subgroups (Whites and men). The implications of these findings for policy and police–citizen relationships are discussed.