Gun Control Research Articles

Linguistic Characterization of Divisive Topics Online: Case Studies on Contentiousness in Abortion, Climate Change, and Gun Control

As public discourse continues to move and grow online, conversations about divisive topics on social media plat-forms have also increased. These divisive topics prompt both contentious and non-contentious conversations. Although what distinguishes these conversations, often framed as what makes these conversations contentious, is known in broad strokes, much less is known about the linguistic signature of these conversations. Prior work has shown that contentious content and structure can be a predictor for this task, however,most of them have been focused on conversation in general,very specific events, or complex structural analysis. Additionally, many models used in prior work have lacked interpretability, a key factor in online moderation. Our work fills these gaps by focusing on conversations from highly divisive topics (abortion, climate change, and gun control), operationalizing a set of novel linguistic and conversational characteristics and user factors, and incorporating them to build interpretable models. We demonstrate that such characteristics can largely improve the performance of prediction on this task, and also enable nuanced interpretability. Our case studies on these three contentious topics suggest that certain generic linguistic characteristics are highly correlated with contentiousness in conversations while others demonstrate significant contextual influences on specific divisive topics.

Whose Advantage? Measuring Attention Dynamics across YouTube and Twitter on Controversial Topics

The ideological asymmetries have been recently observed in contested online spaces, where conservative voices seem to be relatively more pronounced even though liberals are known to have the population advantage on digital platforms. Most prior research, however, focused on either one single platform or one single political topic. Whether an ideological group garners more attention across platforms and/or topics, and how the attention dynamics evolve over time, have not been explored. In this work, we present a quantitative study that links collective attention across two social platforms -- YouTube and Twitter, centered on online activities surrounding popular videos of three controversial political topics including Abortion, Gun control, and Black Lives Matter over 16 months. We propose several sets of video-centric metrics to characterize how online attention is accumulated for different ideological groups. We find that neither side is on a winning streak: left-leaning videos are overall more viewed, more engaging, but less tweeted than right-leaning videos. The attention time series unfold quicker for left-leaning videos, but span a longer time for right-leaning videos. Network analysis on the early adopters and tweet cascades show that the information diffusion for left-leaning videos tends to involve centralized actors; while that for right-leaning videos starts earlier in the attention lifecycle. In sum, our findings go beyond the static picture of ideological asymmetries in digital spaces and provide a set of methods to quantify attention dynamics across different social platforms.

Nonlinear motor-mechanism coupling tank gun control system based on adaptive radial basis function neural network optimised computed torque control

This study investigates the spatial pointing control of a motor-mechanism coupling tank gun. The tank gun control system (TGCS) is driven and stabilised by the motor servo system. However, complicated nonlinearities in the TGCS are inevitable, such as friction, parameter uncertainty, and modelling errors. To solve this problem, the TGCS is regarded as a coupling system composed of mechanical, motor, and control systems. Accordingly, the mechanical and motor models of the marching tank gun are developed first in this paper. The motor-mechanism coupling dynamics model is established based on the principle of equivalent torque. On this basis, a computed torque controller, whose uncertainty was estimated using a radial basis function neural network (RBFNN), is constructed. A modified adaptive algorithm is used to estimate the weights of the RBFNN, and the estimation error of the uncertain observer is compensated by a compensation controller. Simulation results under different conditions validated the effectiveness of the proposed control system, revealing that the proposed control system has good tracking accuracy, strong adaptability, and robustness.

The massacre generation: Young people and attitudes about mass shooting prevention

AbstractObjectiveWe propose that citizens navigate an increasingly complex social and political world using a “cultural toolkit” shaped by firearms and gun violence. Young people in particular have experienced more mass shootings than any previous generation and have witnessed a lack of government response to these massacres. This article explores the attitudes that members of the Massacre Generation express about mass shooting prevention.MethodsWe analyze data from several public opinion surveys conducted following major mass shootings in the United States using logistic regression. These surveys were fielded and sponsored by a variety of organizations and asked a nearly identical question about whether mass shootings can be prevented by societal and governmental action.ResultsWe find that the Massacre Generation is indeed more likely to think the government can prevent mass shootings by implementing stricter gun control laws. We find evidence of these attitudes in multiple public opinion surveys from 2012 to 2018. Furthermore, we find no age effect in multiple surveys conducted between 1999 and 2011, suggesting that these attitudes are a relatively new phenomenon.ConclusionYoung people today express that government regulation (i.e., stricter gun laws) can prevent gun violence, placing them at odds with older generations. We discuss the implications of our findings for gun policy development and the future of the gun debate.

A Consumed Income World- The Low Income and Prospects for Simplification- Replies to Professors Fleming and Yin

As chair of the Committee on Tax Structure and Simplification of the Section of Taxation of the American Bar Association, I invited Professors Fleming and Yin to lead a discussion with members of the Committee on the effects of various proposed consumed income tax models. Splendid scholars as they are, each converted his informal remarks into a published article.Meanwhile, the airwaves have been surfeited with talk shows, interviews, and panel discussions dealing ad nauseam with flat, and flatter, taxes, a consumed income tax, a national sales tax, and various proposals for taxation of business income. The general obfuscation of important and critical issues often seems intentionally deliberate, and in any case, however presented, does little to inform the public. Of all the issues we have on our national platter-abortion, gun control, educational policy, crime in the streets-taxation is the most emotionally supercharged because it affects us all. We all pay taxes, direct and indirect; taxes pervade and permeate our lives. Why can we not have clear and direct demonstrations of what various proposals would accomplish? Some years ago, Louis Eisenstein wrote that the problem is not that the American people do not understand the tax system; rather, the problem is that they may come to understand it too well.

How do veterans view gun policies? Evidence from the Guns in American Life Survey

AbstractObjectiveDo veterans of the U.S. armed forces, a population with unique knowledge of and experience with guns, have distinctive views of gun control policies? While veterans are commonly assumed to be conservatives and Republicans, an emerging body of work has begun to explore the complexities of their policy opinions, partisanship, and voting behaviors. Such work provides needed nuance about this symbolically and politically important group.MethodsUsing the Guns in American Life Survey (2018, n = 3103), we test whether veterans (with combat and noncombat experiences), family members of veterans, and nonveterans have different perspectives, even after taking into account factors such as gun ownership and partisanship. ResultsThe findings indicate that veterans (and particularly combat veterans) are more supportive than nonveterans of expanding civilians' gun carrying rights. On the other hand, veterans with and without combat experience are more likely to favor banning AR15 and military‐style rifles and high‐capacity ammunition clips. Veterans are also more likely to favor a 14‐day waiting period for all gun purchases, but they do not have unique positions on mental health screening for gun purchases.ConclusionTaken together, these findings appear to reflect a veteran population that is positively disposed toward guns in general but also understands the destructive power of military‐style weapons.

Gun violence as a public health issue: Media advocacy, framing and implications for communication

Following a recent push to reframe gun violence as a public health issue, an online survey (N = 510) helped explore frame salience and frame adoption through the lens of media advocacy. Findings revealed that gun control and gun rights frames are salient, and television, social media and newspapers are the most popular sources of gun violence information. Individuals are being held responsible, while background checks were the most salient and adopted solution among Americans. Three gun rights organizations were the most salient organizations from media coverage related to gun violence. Theoretical and practical implications are discussed.

Policy pathways to address American youth firearm injury and death.

Context: The burden of firearm violence and death are uniquely American problems. Over 90% of firearm deaths among children and adolescents in high income countries occur in the United States. Despite similar overall crime rates, the gun homicide rate is about 25 times higher in the U.S. than other Western democracies, and 49 times higher for those aged 15-24 years. Firearm-related injuries are a leading cause of child and adolescent deaths, second only to motor vehicle crashes. Approximately 4.6 million children are living in U.S. homes with at least one loaded, unlocked firearm. Reducing gun violence injuries and deaths is imperative and requires a multifaceted approach. Objectives: Review the impact of gun violence on youth across the U.S.; articulate the evidence base for gun safety policies; describe the current landscape of federal and state firearm laws. Study Design: Policy analysis and literature review. Results: The history of U.S. firearm policy demonstrates laws in evolution from 1791-2021, regulating both gun owner rights and restrictions. These firearm policies, existing in a variety of forms in states and nationally, reveal evidence that gun safety legislation saves lives: Child Access Prevention; Safe Storage; Universal Background Checks; Permit to Purchase; Extended Waiting Periods; Extreme Risk Protection Orders; Assault Weapon and High Capacity Magazine Ban. The dearth of federal law has resulted in more extensive state legislation but with variability and inconsistencies. No single law or policy reduces all forms of gun violence, but states with a variety of firearm policies have a cumulative impact on reducing injuries and death. Conclusions: We aim to promote education, physical safety, and behavioral health so that children can achieve their highest potential. Decreasing firearm injury and death is achievable with education, collaboration, research, and policies. To protect children and youth from firearm injury and death, we must: strengthen federal laws building on evidence from state policies; protect current evidence-based state laws from dismantling efforts; invest in public health firearms research; overcome the inequities suffered by disproportionately affected populations.

The effect of legislation on firearm-related deaths in Canada: a systematic review.

BackgroundFirearm misuse is common in cases of homicide, suicide and unintentional injury; this is a major public health issue, with societal and economic costs extending beyond the immediate injury or loss of life. We sought to review the evidence on the effectiveness of Canadian legislation in reducing deaths caused by firearms.MethodsFive databases (PubMed, Embase, CINAHL, Web of Science and Scopus) were searched from inception to May 2021 for studies evaluating the effect of Canadian gun control laws Bill C-51 (1977), Bill C-17 (1991) and Bill C-68 (1995) on rates of firearm-related death. Two reviewers performed article screening independently and in duplicate. We synthesized data using descriptive statistics. The primary outcome of interest was firearm-related mortality rates. Because of study heterogeneity, a meta-analysis was not performed.ResultsOverall, 1479 articles were screened, and 18 studies were included. Ten studies examined the effect on homicides, of which 5 reported a reduction during the postlegislation period; 1 study reported evidence of substitution from firearms to other methods of homicide among people aged 15–24 years. Eleven studies evaluated the effect on suicides, with 9 finding a reduction in suicide rates. Eight of these studies reported evidence of substitution from firearms to other suicide methods. Two studies investigated accidental deaths; neither reported any benefit after legislation.InterpretationEvidence supporting the effectiveness of Canadian firearms legislation in the reduction of homicide and accidental death rates is inconclusive; a decrease in firearm-related suicide rates was observed by most studies, but evidence of method substitution was also identified. Re-evaluation of existing laws may be beneficial to build an improved and effective evidence-based national framework for prevention of gun violence. PROSPERO registrationCRD42020192486

Adrenocortical responses of emerging adults in California in the two months following the Pulse night club massacre: Evidence for distal stress responses

This study examined adrenocortical responses in the days following the Pulse nightclub massacre on June 12, 2016, among emerging adults in Northern California (N = 202; M = 23.18 years, SD = 2.56; 25% LGBQ-Latinx, 25% LGBQ-White, 25% Straight-Latinx, and 25% Straight-White) between June 13—August 12, 2016. As predicted, participants tested more proximally to the massacre had higher waking cortisol (intercepts) and flatter diurnal cortisol output (slopes), indicative of time-dependent adrenocortical arousal across the day. The effect of days post-massacre on waking cortisol was moderated by daily distress, with days since the Pulse massacre predicting waking cortisol significant only for participants reporting lower distress; participants who reported feeling higher daily distress had elevated waking cortisol across the testing period. These findings were independent of weekly personal stressors, and consistent across participants’ demographic and identity characteristics. The violent attack at the Pulse nightclub was connected to increased waking cortisol and diurnal cortisol production for several days after the massacre, in a distal population exposed to the massacre vicariously, and especially for individuals not experiencing other, personal stressors. Heightened physiological responses to violent crimes support policy efforts to protect vulnerable communities, including violence prevention, gun control, and community-based trauma response services for those directly and indirectly affected by gun violence.

How Intersectional Threat Shapes Views of Gun Policy: The John Wayne Solution

Abstract Guns are highly visible in the news, in politics, and in American culture more broadly. While most Americans support some gun control, a significant and vocal minority of Americans are firmly opposed. Drawing on work from the recently developing sociology of modern gun culture, we propose an intersectional threat model—wherein perceived threats to multiple privileged identities provoke a distinct response—for understanding the positions Americans take on gun policies. Using data from a 2018 national survey conducted by the American National Election Survey, we find a robust role for perceived threats along gender, race, and citizenship lines in opposition to background checks for private sales and an assault weapons ban as well as support for arming teachers. Interactions reveal multiplicative effects: that gender threats matter more when racial and immigrant threats are also felt. We discuss implications for the prospect of policy and for understanding the pro-gun alt-right movement and other potential applications of intersectional threat.

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Learning about Spatial and Temporal Proximity using Tree-Based Methods

AbstractLearning about the relationship between distance to landmarks and events and phenomena of interest is a multi-faceted problem, as it may require taking into account multiple dimensions, including: spatial position of landmarks, timing of events taking place over time, and attributes of occurrences and locations. Here I show that tree-based methods are well suited for the study of these questions as they allow exploring the relationship between proximity metrics and outcomes of interest in a non-parametric and data-driven manner. I illustrate the usefulness of tree-based methods vis-à-vis conventional regression methods by examining the association between: (i) distance to border crossings along the US-Mexico border and support for immigration reform, and (ii) distance to mass shootings and support for gun control.

The role of context in shaping the relationship between physical health and suicide over the life course

U.S. suicide rates are at a thirty-year high while physical health, as measured by life expectancy and pain, has declined, particularly for those without a college degree. We investigate how these patterns may be related by exploring the role of physical health problems in suicide deaths using 2019 data from the National Violent Death Reporting System. We estimate multilevel logistic regression models to examine (1) how individual risk factors are associated with the likelihood of a physical health circumstance underlying a suicide over the life course and (2) how context – the socioeconomic, health and policy environment of the state in which a decedent resides – may play a role. Physical health circumstances were present in about 20% of all suicides and in over half of suicide deaths for the older population in 2019. A gender crossover effect exists, in which women are more likely to have a physical health problem contribute to a suicide prior to age 60, but men surpass women after age 60 in that probability. Net of individual characteristics, we find significant variation across states in the likelihood of physical health circumstances. For all age groups, physical health circumstances are more likely in states that are less densely populated with weaker gun control laws and higher suicide rates. Among decedents younger than 65, the likelihood is elevated in states with limited health care access. This study highlights the critical interaction between physical and mental well-being, the ways in which that interaction may be experienced differently by gender, and the important role of social safety nets in prevention.

Protest and state policy agendas: Marches and gun policy after Parkland

AbstractDoes protest spur the government to act at the regional or local level? Gun control in the United States offers a promising case for studying this question, due to considerable variation in both protest and policy‐making activity following the mass shooting in Parkland, FL in early 2018. We use an original weekly panel dataset of progress on gun control and pro‐gun legislation in all states between 2017 and 2019, paired with weekly protest march data from the Crowd Counting Consortium, to determine whether or not protest spurred state governments to act on gun policy. We find that marches advocating gun control are associated with an increased likelihood of legislative movement on gun control, though they do not appear to discourage action that loosens gun laws. On the other side, pro‐gun marches do not seem to have the desired effect.

Gun Ownership, Threat, and Gun Attitudes in an Experiment

Researchers have considered the role of perceived threat and fear of crime in shaping attitudes about gun regulation. We contribute to this literature by examining whether gun owners, who tend to oppose gun regulations, moderate their gun views when exposed to a gun-related threat. We argue that although exposure to threat can increase the desire to be armed, gun owners primed with a threat may soften their views on gun regulation relative to non-gun owners. We employ an experiment embedded within a nationally representative survey to test our hypotheses. Our analysis of the data from our survey supports the notion that gun owners generally oppose gun regulations, but exposure to a gun-related threat moderates their opposition to gun regulations. We discuss the limitations of our study and conclude with a discussion of the implications of these results for understanding public support for gun regulation in America.

Violence and Voting in the United States: How School Shootings Affect Elections

Since the 1980s over 100 indiscriminate school shootings have taken the lives of dozens of adults and children across 40 states. Each school shooting sparked debates about gun control, with Democrats increasingly advocating for stricter gun laws and Republicans increasingly opposing them. Gun violence has certainly divided the country along partisan lines, but has it influenced the public’s political behavior? Political scientists Laura García-Montoya, Ana Arjona, and Matthew Lacombe investigate this question in their recent American Political Science Review study. In particular, they examine whether people who live in counties that experience school shootings change their voting behavior. García-Montoya, Arjona, and Lacombe find that gun violence in schools does not increase voter turnout, but it does shift the public’s vote in favor of Democrats during presidential elections.

A Design of Test Equipment on Gun Control Systems and Autoloaders

In response to a series of problems in the actual use of a certain type of tank fire control system and autoloader, such as many sudden failures, difficulties in diagnosing and locating failures, and complex maintenance and guarantee, a testing equipment is designed for the gun control box and autoloader, which is used to monitor the status of the gun control box and autoloader, and store the test data in real time. By comparing the test data and analysing the abnormal problems that occur in the work of the gun control box and the autoloader, it realises the monitoring of the working condition of the tank gun control box and the autoloader components, providing effective data support for the next step of repair.

State Gun Law Grades and Impact on Mass Shooting Event Incidence: An 8-Year Analysis.

Gun violence, particularly in the form of mass shooting events (MSE), is a growing, significant public health crisis in the US. Whether stricter gun laws decrease MSE is not known. We hypothesized that stronger state gun laws would be associated with lower MSE incidence. Mass shooting events, defined as at least 4 people injured in a single event, and state gun law grade data for years 2014 through 2021 were obtained from the Gun Violence Archive and Giffords Law Center, respectively. An A grade indicated strictest gun control laws, and F indicated the weakest. US 2020 Census data were used to estimate MSE per million per state. The number of MSE per million was examined for association with gun law grades. From 2014 through 2020, there were a total of 2,736 recorded MSE, with at least a 2-fold increase in incidence from 272 in 2014 to 626 in 2020. Concomitantly, the number of F grade states decreased from 27 to 21 (22%). The MSE mean (SD) per F state increased from 4.0 (5.1) in 2014 to 9.7 (10.3) in 2020 (p = 0.03). No differences were found in unadjusted number of MSE per year by gun law grade for any study year examined (p = 0.67). After adjusting for population, this finding of no difference persisted. Strength of state gun law grades does not affect MSE incidence, even after correction for population size. This suggests that legislation by itself is not an effective prevention measure and other broader and meaningful primary gun violence interventions are needed.

Slipping Through the Cracks? The Impact of Reporting Mental Health Records to the National Firearm Background Check System

Prominent players on both sides of the contentious debate over firearm regulation agree that some people with mental illness should be prohibited from purchasing firearms. This consensus exists despite limited empirical support. We assess the impact of states reporting mental health records to the national firearm background check system on homicide and suicide. Using panel data and a difference-in-differences methodology, we find that upon adding mental health records to the national system, states experienced a 3.3–4.3% decrease in firearm-related suicides with no evidence of substitution to non-firearm suicides. Our findings suggest that mental health restrictions on gun sales do effectively reduce suicide but not homicide.