UMD Theses and Dissertations
Permanent URI for this collectionhttp://hdl.handle.net/1903/3
New submissions to the thesis/dissertation collections are added automatically as they are received from the Graduate School. Currently, the Graduate School deposits all theses and dissertations from a given semester after the official graduation date. This means that there may be up to a 4 month delay in the appearance of a given thesis/dissertation in DRUM.
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Item Situational Perspectives of Maritime Piracy(2019) Jiang, Bo; LaFree, Gary D; Criminology and Criminal Justice; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)The emergence of maritime piracy has caused a great deal of concerns among various dimensions of our society. However, with few exceptions prior research has been hampered by a lack of theoretical underpinning and access to the most appropriate statistical methods. While there are nuances of piracy that can be considered quite unique, in general it can be situated within a broader framework of offending based on outcomes that seemingly share many of the same qualities. My dissertation attempts to improve our understanding of the crime by testing three core tenets of situational perspectives in the context of piracy. Three research questions motivated by LaFree and Birbeck (1991)’s conceptualization of a situation are examined – 1) To what extent does the study of maritime piracy support the central tenets of environmental criminology and crime and harm concentration at places; 2) How do offender motivation, target suitability and the absence of capable guardians and their convergence impact the instantaneous risk of piracy in South East Asia; and 3) To what extent do economic conditions of fishermen impact the instantaneous risk of piracy in East Africa and South East Asia. I rely on the IMO-GISIS database from 1995 to 2014, as well as auxiliary data from various organizations to tackle these questions. First, exploiting spatial econometrics methods, I find that there is statistically significant spatiotemporal patterns of concentration of hot spots and harm spots. Second, results from survival analyses indicate that the hazard ratios of the measures of high motivation, absence of capable guardians, suitable targets and their convergence are greater than 1 and significant in both the Malacca Strait and South China Sea. The series of robustness tests based on both frequentist and Bayesian statistics provide similar conclusions. Third, using a two-stage semiparametric approach, I find that there is statistically significant evidence to show that economic conditions of the fisherman-pirate adversely impact the instantaneous risk of ships being attacked in East Africa and the Malacca Strait and South China Sea. A robustness check based on an alternative specification supports the finding. I conclude with the implications of the research for theory, social policy and future research.Item Public Communication as Counter-Terrorism: An Examination of Zero-Sum Counter-Terrorism Assumptions(2017) Fisher, Daren Geoffrey; Dugan, Laura; Criminology and Criminal Justice; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)Terrorist groups from around the globe rely on a range of communication tactics to rally support to their political movement, including publicly directed discourse ranging from public talks to online publications. Thus far, the criminological literature has focused primarily on efforts embodied in law and policy to make terrorism harder to commit. Based on the zero-sum assumption that any losses for a terrorist group result in gains for a government, this perspective suggests that terrorism may only be reduced through deterrence or by diminishing the relative capacity of terrorist organizations. In contrast, this dissertation argues that public communications are a relatively inexpensive, readily available, and less oppressive means to potentially reduce terrorism. Seeking to identify the role that government public communications have played in existing counter-terrorism strategies, this dissertation examines US public communications regarding terrorism delivered by US Presidents and their Press Secretaries between 1970 and 2014. Drawing upon the 6,001 transcripts of presidential communications concerning terrorism during this period, a series of structural equation models are employed to estimate the impact of the quantity and sentiment of presidential communications concerning terrorism on subsequent terrorism aimed at US targets. Findings from these models suggest that the frequency of presidential communications regarding terrorism is consistently related to reductions in terrorism targeting the US in the following month. The frequency of terrorism communications is related to decreases in both domestic and international terrorism, but is also related to increases terrorist casualties between 1970 and 2014. After accounting for the sentiment in these models, support primarily emerged that communicating negative sentiment reduces terrorism in line with restrictive deterrence theory. Key differences in the impact of both the frequency and sentiment of terrorism communications between presidential administrations are also identified, suggesting that influences were more prominent for Presidents such as Carter and George W. Bush. Finally evidence that public approval moderates the impact of presidential communications on domestic terrorism is provided, with presidents with approval ratings in the lowest 25% netting the largest decreases in terrorism but greatest increases in terrorist casualties through their communications.Item Examining General Deterrence Using Data from the National Football League(2014) Greenman, Sarah; Paternoster, Raymond; Criminology and Criminal Justice; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)To date, research studies have found only mild support for classic deterrence theory with the greatest support for increased certainty, little support for increased severity, and scant research on the effect of increased celerity. Much of this prior literature has used scenario-based data, relied heavily on student samples, and explored rule breaking behavior over relatively short time periods. Finally, the slow pace of punishment within the criminal justice system potentially reduces any existing deterrent effect of the certainty and severity of punishment. This dissertation seeks to address these limitations of prior deterrence studies by using 13 years of data (2000-2012) from the National Football League consisting of rule breakers who are punished with penalties and monetary fines almost immediately upon discovery of the infraction. The main question driving this research is whether there is evidence of general deterrence. Specifically, this dissertation seeks to determine whether prior punishment reduces current rule-breaking behavior. To address this question, this research explores the effect of on-field penalties and post-game fines on behavior within the National Football League at both the league and team levels. The dataset has several rare characteristics including: large variety and detail in the types of punishment administered, an opportunity to directly observe the effect of punishment, the near immediate imposition of punishment, and the transmission of almost perfect information about punishment. The primary finding is that there is no evidence of general deterrence in the National Football League, independent of control variables. Specifically, penalties and fines do not appear to prevent future rule breaking behavior. In general, when controlling for particular seasons, opponents, or the record of a team, the effects of penalties and fines loose significance and approach zero. The different controls for seasons, opponents, or record are fairly consistent in their statistical significance for all penalties and violent penalties, although it appears that violent penalties vary less according to these outside factors than all types of penalties. In sum, this dissertation finds no evidence that punishment affects future rule-breaking behavior at either the team or league level and thus, does not provide support for general deterrence.Item A Prescription for Trouble: Prescription Drug Diversion as the New Trend in Drug Crime(2013) Dykstra, Laura Garnier; Johnson, Brian D.; Criminology and Criminal Justice; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)Nonmedical use of prescription drugs is rising in the United States (Substance Abuse and Mental Health Services Administration, 2001; Substance Abuse and Mental Health Services Administration, 2011). Diversion of these substances represents a growing problem for law enforcement and public health officials (Cai, R., Crane, E., Poneleit, K., & Paulozzi, L., 2010; U.S. Department of Justice, 2009). This study documents the extent of prescription drug diversion among an understudied population -- individuals with legitimate prescriptions - and uses Social Learning Theory and Rational Choice Theory to examine risk factors relating to diversion. Participants: Participants in this study were 502 young adults who had been prescribed a medication in waves 5 through 7 of the College Life Study. The College Life Study is a prospective longitudinal study of a single cohort of young adults that were sampled from a large, public university in 2004. Methods: Diversion behavior was described in detail and differences between diverters and non-diverters were examined. Regression analyses examined the effects of theoretically driven peer and rational choice effects on the likelihood of diversion. Opportunity and perceptions were examined as potential mediators. Results: Individuals with legitimate prescriptions divert a substantial amount of medication. Reasons for refusing to divert, opportunities for diversion, and beliefs about diversion differ between diverters and non-diverters. Regression analyses revealed both peer effects and exposure to information regarding prescription drugs predict diversion. Opportunity mediated the relationship between perceptions of peer diversion and likelihood of diversion. Conclusions: Support for both social learning and rational choice approaches to diversion was found. Additional research is warranted to continue to explore risk and protective factors relating to diversion. Implications for the field are discussed.Item THE UTILITY OF DETERRENCE-BASED SANCTIONS IN THE PREVENTION OF VIOLENCE AGAINST ABORTION PROVIDERS: TESTING A BLENDED MODEL OF DETERRENCE AND BACKLASH(2012) Bartholomew, Brad; LaFree, Gary; Criminology and Criminal Justice; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)The American abortion debate has existed since the early 19th century; however, the previous four decades have born witness to fundamental changes within the abortion opposition movement. Beginning in the 1970s, activists started to focus more of their attention on abortion providers. Soon thereafter, the traditionally peaceful protest activities of the activist movement began to share space with acts of harassment, arson, bombings, assaults, and even assassination. Today, abortion provider-related crime has become an unwelcome staple within the broader pro-life movement. In an attempt to prevent future attacks, state and federal legislatures have enacted a series of protection laws designed to raise the penalties associated with crimes against abortion providers. Despite the recent proliferation of these laws, their impact on abortion provider-related crime has seldom been the subject of rigorous empirical research. In this dissertation, I aim to address this shortcoming by using zero-inflated negative binomial regression modeling to present the first longitudinal test of the relationship between protection laws and abortion provider-related crime using incident-level data from 1975 to 2008, collected during a year-long research project at The National Consortium for the Study of Terrorism and Responses to Terrorism (START). The results of this study offer considerable support for the backlash hypothesis and the notion that traditional deterrence-based policy is often demonstrably unsuccessful in the prevention of this particular type of crime. Additionally, the findings suggest that not all protection laws are created equal with respect to their impact on crime. While state laws prohibiting minor forms of anti-abortion crime are shown to produce a backlash effect for crimes of harassment and vandalism, other types of state protection laws were shown to have no effect on crime whatsoever. Furthermore, the presence of the highly visible FACE Act is shown to generate similar increases for both major and minor crime types.