Level Of Polarization Research Articles

Electoral volatility and political polarization in developing democracies: Evidence from Latin America, 1993–2016

What explains political polarization across developing democracies? In contrast to extant studies, this article develops a novel argument that links electoral (in)stability at the party system level with varying levels of polarization. Specifically, we claim that increasing levels of electoral volatility generate high levels of uncertainty among partisan elites, which respond by setting clear policy positions that are frequently far away from the center in the ideological spectrum. As such, higher levels of volatility engender higher levels of polarization. Further, because the majority of party system change in developing democracies comes mainly from the emergence of new parties, we decompose the effects of stable party system volatility (for established parties) and replacement party system volatility (for newly competing parties) and hypothesize that higher levels of replacement volatility—as opposed to stable volatility—generate higher levels of polarization. Our main theoretical claims find strong qualitative and quantitative support.

An immunomodulatory polypeptide hydrogel for osteochondral defect repair.

Osteochondral injury is a common and frequent orthopedic disease that can lead to more serious degenerative joint disease. Tissue engineering is a promising modality for osteochondral repair, but the implanted scaffolds are often immunogenic and can induce unwanted foreign body reaction (FBR). Here, we prepare a polypept(o)ide-based PAA-RGD hydrogel using a novel thiol/thioester dual-functionalized hyperbranched polypeptide P(EG3Glu-co-Cys) and maleimide-functionalized polysarcosine under biologically benign conditions. The PAA-RGD hydrogel shows suitable biodegradability, excellent biocompatibility, and low immunogenicity, which together lead to optimal performance for osteochondral repair in New Zealand white rabbits even at the early stage of implantation. Further in vitro and in vivo mechanistic studies corroborate the immunomodulatory role of the PAA-RGD hydrogel, which induces minimum FBR responses and a high level of polarization of macrophages into the immunosuppressive M2 subtypes. These findings demonstrate the promising potential of the PAA-RGD hydrogel for osteochondral regeneration and highlight the importance of immunomodulation. The results may inspire the development of PAA-based materials for not only osteochondral defect repair but also various other tissue engineering and bio-implantation applications.

Bridging the (Brexit) divide: Effects of a brief befriending meditation on affective polarization.

The European Union Brexit referendum has divided the British electorate, with high levels of animosity between those who affiliate with the Remain side (Remainers) and the Leave side (Leavers) of the debate. Previous research has shown that a brief befriending meditation reduces affective polarization among Democrats and Republicans in the United States, but the results have not been replicated in a non-US sample and the psychological mechanisms underlying the effects have yet to be examined. The present study therefore used a post-test only randomized controlled design to investigate the effects of a brief befriending meditation on affective polarization among Remainers and Leavers (n = 922). Results showed that participants in the befriending condition scored modestly lower on affective polarization than participants in the attentional control condition (t(921) = 2.17, p = .030, d = 0.14) and that perceived commonality with the political outgroup mediated the effects. In sum, audio-guided befriending practices may be a highly scalable means to reduce high levels of affective polarization through increasing perceived commonality.

Polarization of Opinions on COVID-19 Measures: Integrating Twitter and Survey Data

Polarization of public opinion is a major issue for societies, as high levels can promote adverse effects such as hostility. The present paper focuses on the polarization of opinions regarding COVID-19 prevention measures in survey data and on Twitter in the German-speaking regions of Germany, Austria, and Switzerland. The level of polarization is measured by dispersion and bimodality in the opinions based on the sentiment in Twitter data and the agreement in the survey data. Our paper, however, goes beyond existing research as we consider data from both sources separately and comparatively. For this purpose, we matched individuals’ survey responses and tweets for those respondents who shared their Twitter account information. The analyses show that vaccination is more polarizing compared to mask wearing and contact tracing in both sources, that polarization of opinions is more pronounced in the survey data compared to the Twitter data, but also that individuals’ opinions about the COVID-19 measures are consistent in both sources. We believe our findings will provide valuable insights for integrating survey data and Twitter data to investigate opinion polarization.

Survey Nonresponse and Mass Polarization: The Consequences of Declining Contact and Cooperation Rates

Recent studies question whether declining response rates in survey data overstate the level of polarization of Americans. At issue are the sources of declining response rates—declining contact rates, associated mostly with random polling mechanisms, or declining cooperation rates, associated with personal preferences, knowledge, and interest in politics—and their differing effects on measures of polarization. Assessing 158 surveys (2004–2018), we show that declining cooperation is the primary source of declining response rates and that it leads to survey overrepresentation of people who are more engaged in politics. Analyzing individual responses to 1,223 policy questions in those surveys, we further show that, conditional on the policy area, this survey bias overestimates or underestimates the partisan divide among Americans. Our findings question the perceived strength of mass polarization and move forward the discussion about the effect of declining survey response on generalizations from survey data.

Attempting to measure the intensity of opposing feelings in elections: A polarization approach to Catalonia’s independence case

This paper addresses the Catalonian political process for independence. Based on the outcome of the 2017 Catalonian Regional Election, it firstly innovates by building an independence-feeling indicator for each municipality. Subsequently, we resort to the concept of polarization to assess the level of inherent conflict. Besides, we evaluate to what extent polarization can be explained by different variables. Then, in the second part of the paper, we redo the analysis but, to handle the potential aggregation problem that arises with geographically reference data (MAUP problem), we compute for each municipality two (antiindependence-feeling and proindependence-feeling) indicators rather than one. In doing so, we avoid merging votes that offset each other and, by applying the polarization index, we not only test for (inter-) polarization but also (intra-) polarization (within municipalities). The results show important differences. More specifically, although polarization across municipalities is relatively small, there is a high level of polarization within them. Moreover, while population density, Catalan proficiency and place of birth are instrumental when explaining polarization if a single indicator is computed, in the case of two indicators unemployment rate, age and wealth also emerge as remarkable variables, while among the three previous ones the importance of population density decreases.

FAKE NEWS & HATE SPEECH: A Colloquium Report

Nigeria, the proverbial giant of Africa, has in recent times, been beset with the politics of paternalism which has translated into heightened consciousness in ethnic nationalism and extremist immoderation, all too manifest in the now very dominant paradigm of fake news and hate speech. Amidst this threatening state of confusion, the nation-state witnesses its highest level of polarization among the citizenry and records a harvest of kidnappings, abductions, raping and ritual killings, all of which the government blames on fake news and hate speech. 
 As part of its contribution in the attempt to mitigate and possibly proffer a solution to the twin monsters of fake news and hate speech, the Olusegun Obasanjo Centre for African Studies (OOCAS) at the National Open University of Nigeria (NOUN) Abuja organized a one-day Colloquium on Fake News and Hate Speech. This report, therefore, is a descriptive analysis that highlights the culture of impunity with which political elites incite and polarize the citizenry, especially on the contentious issues of religion and ethnicity.
 The paper applies the critical discourse analysis approach to evaluate the colloquium proceedings - the views, positions and propositions of discussants/participants and the ensuing communiqué that fake news and hate speech are largely products of mainstream and social media; with governments and political elites as the main culprits who exploit the volatile issues of religion, politics and ethnicity to polarize and incite.
 The paper concludes with nine communiqué recommendations including, that the mass media, especially the mainstream media, should invest more in the practice of investigative journalism and Nigeria’s governments, in general, should provide good governance, equity and justice to the citizenry; that, participants and discussants believe will curb the menace of fake news and hate speech.

Polarization effects, shape resonances and bound states in low energy positron elastic scattering by Zinc and Cadmium vapours

Low energy elastic positron scattering from Zn and Cd atoms was studied using model correlation potential. Special attention is given to the study of polarization effects through the incorporation of quadrupole polarizabilities and hyperpolarizabilities in the scattering potential. Resonant p-wave shape structures are found for both systems. Results show that these become sharper and move to lower energies as the level of polarization of the potential is increased. Resonance was suppressed in Cd when the second hyperpolarizability γ was taken greater than 46000 a.u. and true p-wave bound states were formed. Comparison to previous calculations and dependence of the results with the scheme adopted to match the correlation and polarization components of the potential is discussed. We find that the elastic cross sections and the resonant effects do not depend on the specific form of the correlation potential but strongly depend on the polarization parameters and the matching point determined by the crossing between the correlation and polarization components of the potential. The value for the dipole–dipole–quadrupole polarizability B for Cd was specifically calculated using the relativistic coupled-cluster approach and is reported for the first time in this work.

COVID-19 Induced Misinformation on YouTube: An Analysis of User Commentary

Several scholars have demonstrated a positive link between political polarization and the resistance to COVID-19 prevention measures. At the same time, political polarization has also been associated with the spread of misinformation. This study investigates the theoretical linkages between polarization and misinformation and measures the flow of misinformation about COVID-19 in the comment sections of four popular YouTube channels for over 16 months using big data sources and methods. For the analysis, we downloaded about 3.5M English language YouTube comments posted in response to videos about the pandemic. We then classified the comments into one of the two following categories by applying a supervised Natural Language Processing classifier: (1)fake: comments that contain claims and speculation which are verifiably not true; and (2)legitimate:comments that do not fall into the fake category. The results show that the level of misinformation in YouTube comment sections has increased during the pandemic, that fake comments attract statistically more likes, and that the ratio of fake comments increased by 0.4% per month. These findings suggest that once introduced into an online discussion, misinformation potentially leads to an escalating spiral of misinformation comments, which undermines public policy. Overall, the results signal alarming pandemic-related misinformation and, potentially, rising levels of affective polarization. We place these results in context and point out the limitations of our approach.

Guardians of Democracy or Passive Bystanders? A Conjoint Experiment on Elite Transgressions of Democratic Norms

Emerging literature shows that citizens in established democracies do not unconditionally support central democratic principles when asked to weigh them against co-partisanship or favored policy positions. However, these studies are conducted in highly polarized contexts, and it remains unclear whether the underlying mechanisms also operate in more consensual contexts. Furthermore, it is unclear whether “critical citizens” or satisfied democrats are more eager to support democratic principles. We study these questions with evidence from a conjoint experiment conducted in Finland ( n = 1030), an established democracy with high levels of democratic satisfaction and a consensual political culture. We examine how transgressions of two central democratic norms, the legitimacy of political opposition and the independence of the judiciary, affect leader favorability. We also explore how these differ across ideological and policy congruence and across levels of political disaffection. Our results show that some segments of the Finnish population are willing to condone authoritarian behavior if this brings them political benefits. Furthermore, we find that satisfied rather than “critical” citizens are more likely to sanction such behavior. These findings suggest that dangers of democratic deconsolidation may appear even in consensus democracies with relatively low levels of political polarization.

Keep Them Engaged! Investigating the Effects of Self-centered Social Media Communication Style on User Engagement in 12 European Countries

ABSTRACT On Facebook, patterns of user engagement largely shape what types of political content citizens can see on the platform. Higher engagement leads to higher visibility. Therefore, one of the major goals of political actors’ Facebook communication is to produce content with the potential to provoke user engagement, and thereby increase their own visibility. This study introduces the concept of self-centered social media communication style which focuses on “salient” and “owned” issues with populist and negative appeals and investigates how user engagement is related to its main elements. We also explore how users’ receptivity to these content-related factors is shaped by country context. More specifically, we hypothesize that users are more likely to react, comment on and share posts focusing on salient topics or issues “owned” by parties rather than more permanent policy issues, and posts including populist appeals and negativity. Further, we test how these effects are moderated by geographical regions and the level of party system polarization. We manually coded 9,703 Facebook posts of 68 parties from 12 European countries in the context of the 2019 European elections. Our findings show that users are more likely to engage with immigration-related, domestic, populist and negative posts, but react less to posts dealing with environmental or economic issues. While issue ownership does not play a significant role for user engagement, country context plays a minor role. However, some populist appeals are more effective in more polarized countries.

The Evolving Terrorism Threat in Europe

The threat of mass-casualty terrorist attacks in Europe directed by international organizations may have subsided, but the threat is in many respects now more menacing that ever. Lone-actor attacks motivated by a confused mixture of ideologies, often combined with mental health issues, are increasingly the norm, and are harder to detect and prevent. A rising extreme right, meanwhile, is increasingly mirroring violent Islamist groups. In these varied forms, terrorism continues to strike at the heart of European identity and liberal ideals, playing out against a backdrop of anti-immigrant sentiment and high levels of political polarization.

The Postliberal Aesthetic; or, How Can Literary Criticism Help Unsettle America’s Polarization?

Abstract This essay interprets the present moment as marked by democratic crisis and assigns to American literary criticism the task of responding to it. While American democracy faces multiple crises, the essay contends that current levels of polarization make it impossible to effectively address any of them. In this situation, literary studies confronts a dual challenge: it must, first, come to terms with its own contribution to the dynamics of polarization and, second, consider whether it can help undo it. Adopting a cultural–sociological perspective, the essay identifies literary studies as an institution that consolidates the politico-cultural identity of the “new middle class” and contributes to the culturalization of politics underlying contemporary polarization. However, the essay contends, American literary studies has the capacity to help revive democratic culture if it nurtures reading practices that unsettle fixed identities. To that end, the essay singles out various recent theories of reading whose democratic potential is grounded in their shared premise that literature is a communicative act. In interpreting these models of criticism as a potential way out of the malaise of polarization, the essay makes a call to revisit, reevaluate, and reformulate the tradition of liberalism.

Pilot Quality-Assurance Study of a Third-Generation Batch-Mode Clinical-Scale Automated Xenon-129 Hyperpolarizer.

We present a pilot quality assurance (QA) study of a clinical-scale, automated, third-generation (GEN-3) 129Xe hyperpolarizer employing batch-mode spin-exchange optical pumping (SEOP) with high-Xe densities (50% natural abundance Xe and 50% N2 in ~2.6 atm total pressure sourced from Nova Gas Technologies) and rapid temperature ramping enabled by an aluminum heating jacket surrounding the 0.5 L SEOP cell. 129Xe hyperpolarization was performed over the course of 700 gas loading cycles of the SEOP cell, simulating long-term hyperpolarized contrast agent production in a clinical lung imaging setting. High levels of 129Xe polarization (avg. %PXe = 51.0% with standard deviation σPXe = 3.0%) were recorded with fast 129Xe polarization build-up time constants (avg. Tb = 25.1 min with standard deviation σTb = 3.1 min) across the first 500 SEOP cell refills, using moderate temperatures of 75 °C. These results demonstrate a more than 2-fold increase in build-up rate relative to previously demonstrated results in a comparable QA study on a second-generation (GEN-2) 129Xe hyperpolarizer device, with only a minor reduction in maximum achievable %PXe and with greater consistency over a larger number of SEOP cell refill processes at a similar polarization lifetime duration (avg. T1 = 82.4 min, standard deviation σT1 = 10.8 min). Additionally, the effects of varying SEOP jacket temperatures, distribution of Rb metal, and preparation and operation of the fluid path are quantified in the context of device installation, performance optimization and maintenance to consistently produce high 129Xe polarization values, build-up rates (Tb as low as 6 min) and lifetimes over the course of a typical high-throughput 129Xe polarization SEOP cell life cycle. The results presented further demonstrate the significant potential for hyperpolarized 129Xe contrast agent in imaging and bio-sensing applications on a clinical scale.

Meaning in Life, Future Orientation and Support for Violent Radicalization Among Canadian College Students During the COVID-19 Pandemic.

The COVID-19 pandemic has increased levels of uncertainty and social polarization in our societies, compromising young people's capacity to envision a positive future and maintain a meaningful sense of purpose in life. Within a positive youth development framework, the present study investigates the associations of a positive future orientation, presence of and search for meaning in life, and support for violent radicalization (VR) in a diverse sample of Canadian college students. In addition, we investigate the moderating role of future orientation in the association between presence of and search for a meaning in life and support for VR. A total of 3,100 college students in Québec (Canada) (69% female; Mage = 18.57, SDage = 1.76) completed an online survey during the second wave of the COVID-19 pandemic. Results from linear mixed-effects models indicate that a positive future orientation and a higher presence of a meaning in life were negatively and independently associated with support for VR. Search for meaning in life was not associated with support for VR. The magnitude of the negative association between presence of a meaning in life and support for VR was greater among students with a more positive future orientation. Schools and colleges are in a privileged position to implement preventive interventions to support a positive future orientation and the presence of a meaning in life among young people during these challenging and uncertain times and reduce the risk of violence related to extreme ideologies in our rapidly changing society.

Interlayer exciton complexes in bilayer MoS2

Atomically thin transition metal dichalcogenides can show a rich variety of bound exciton complex states, such as trions, biexcitons, Fermi polarons, and phonon replicas, because of the reduced dielectric screening and enhanced Coulomb interaction. To date, studies have mainly focused on the complexes of intralayer excitons, while the electrically tunable interlayer exciton (IX) complexes remain elusive. Here, we report the observation of IX complexes with large out-of-plane electric dipole, strong emission intensity, and giant valley responses in bilayer ${\mathrm{MoS}}_{2}$, through on-resonance photoluminescence spectroscopy. In sharp contrast to the small, positive circular dichroism of intralayer excitons, the circular polarization of IX complexes in bilayer ${\mathrm{MoS}}_{2}$ can basically reach the theoretical limit (100%) but is negative. Such highly unusual light-valley responses of IX complexes in bilayer ${\mathrm{MoS}}_{2}$ demonstrate the strongly suppressed valley depolarization and spin-preserving scattering of electrons during the formation. Remarkably, by breaking the time-reversal symmetry with an out-of-plane magnetic field, a record level of spontaneous valley polarization (7.7%/Tesla) is identified for IX complexes in bilayer ${\mathrm{MoS}}_{2}$. The giant valley polarization of IX complexes in bilayer ${\mathrm{MoS}}_{2}$, together with the feasibility of electrical/optical/magnetic control, provides a firm basis for the development of next-generation electronic and optoelectronic applications with valley functionalities.

Intrinsic polarization of Wolf-Rayet stars due to the rotational modulation of the stellar wind

Context. Fast rotating Wolf-Rayet stars are expected to be progenitors of long duration gamma-ray bursts. However, the observational test of this model is problematic. Spectral lines of Wolf-Rayet stars originate in expanding stellar wind, therefore a reliable spectroscopical determination of their rotational velocities is difficult. Intrinsic polarization of Wolf-Rayet stars due to the rotational modulation of the stellar wind may provide an indirect way to determine the rotational velocities of these stars. However, detailed wind models are required for this purpose. Aims. We determine the intrinsic polarization of Wolf-Rayet stars from hydrodynamical wind models as a function of rotational velocity. Methods. We used 2.5D hydrodynamical simulations to calculate the structure of rotating winds of Wolf-Rayet stars. The simulations account for the deformation of the stellar surface due to rotation, gravity darkening, and nonradial forces. From the derived models, we calculated the intrinsic stellar polarization. The mass loss rate was scaled to take realistic wind densities of Wolf-Rayet stars into account. Results. The hydrodynamical wind models predict a prolate wind structure, which leads to a relatively low level of polarization. Even relatively large rotational velocities are allowed by observational constrains. The obtained wind structure is similar to that obtained previously for rotating optically thin winds. Conclusions. Derived upper limits of rotational velocities of studied Wolf-Rayet stars are not in conflict with the model of long duration gamma-ray bursts.

Beyond the abyss: a proposal for navigating polarized positions

ABSTRACT In response to relentless levels of political polarization in the United States, this essay asks to what extent a shift in pedagogical practices might aid in ameliorating it, especially through the inculcation of rhetorical skills which lend themselves toward the cultivation of a robust form of civic dialogue. To do so, the relationship between rhetoric, (intergroup) dialogue, and debate is assessed and considered with respect to deliberation in the public sphere to provide context for the theoretical maxims and praxis of civic discourse. Then, using the preceding analyses, an evaluative framework is offered to assess the efficacy of dialogic rhetoric in a contemporary setting. Using this framework implementation of the Dialogue and Argumentation for Cultural Literacy Learning in Schools (DIALLS) program being pioneered throughout the European Union into American pedagogy is considered as a means to mitigate future polarizing discourse through the promotion of a nuanced, collaborative approach to meaning making and knowledge construction. Following this examination, a brief assessment of the rhetoric of Democratic Senator Sherrod Brown from Ohio is offered to illustrate the practical applicability of inclusive, dialogic rhetoric in an age of polarization and division.

Opposing views: associations of political polarization, political party affiliation, and social trust with COVID-19 vaccination intent and receipt.

IntroductionPolitical polarization has increased in the USA within recent years. Studies have shown Republicans are less likely to accept COVID-19 vaccinations than Democrats; however, little is known regarding the association between COVID-19 vaccination acceptance and political polarization.MethodsWe used data from a nationally-representative survey of 1427 participants conducted between 9 February 2021 and 17 February 2021. We estimated multivariate-adjusted odds ratios for COVID-19 vaccination intent and receipt according to perceived political polarization (measured as the perceived size of the ideological gap between Democrats and Republicans), political party affiliation, and social trust, controlling for demographic and socioeconomic factors.ResultsAmong participants perceiving high levels of polarization, Republicans (versus Democrats) reported a 90% lower odds of vaccination intent (OR = 0.10 [0.05, 0.19], P < 0.001). Participants with high (versus low) social trust and low perceived polarization had a 2-folder higher vaccination intent (OR = 2.39 [1.34, 4.21], P = 0.003); this association was substantially weaker in the high perceived polarization group.ConclusionsHigh perceived levels of political polarization appear to magnify the decrease in the odds of receiving the COVID-19 vaccine and the intent to get vaccinated among Republicans versus Democrats. Political polarization may further attenuate the protective associations of high social capital with vaccination.

A Media Repertoires Approach to Selective Exposure: News Consumption and Political Polarization in Eastern Europe

In recent years, links between selective news exposure and political polarisation have attracted considerable attention among communication scholars. However, while the existence of selective exposure has been documented in both offline and online environments, the evidence of its extent and its impact on political polarisation is far from unanimous. To address these questions, and also to bridge methodological and geographical gaps in existing research, this paper adopts a media repertoires approach to investigate selective news exposure and polarisation in four Eastern European countries – the Czech Republic, Hungary, Poland and Serbia. Using a combination of population surveys, expert surveys and qualitative interviews, the data for the study were collected between November 2019 and May 2020. We identify five types of news repertoires based on their relative openness to counter-attitudinal sources, and show that selective news repertoires are present in 29% of the entire sample. Our findings also reveal significant cross-country differences, with the more selective news repertoires more prominent in countries characterised by higher levels of polarisation. Furthermore, while the selection of news sources is in line with people's electoral (and to a lesser extent ideological) preferences, our findings show that exposure to counter-attitudinal sources can also be strongly correlated with political and ideological leanings. Our qualitative data suggest that this is because exposure to counter-attitudinal sources can reinforce attitudes, and potentially contribute to polarisation. Qualitative data also highlight the influence of environmental factors (e.g., family), and suggest that selective news consumption is associated with normatively different conceptions of media trust.