Quantifying social organization and political polarization in online platforms.

Mass selection into groups of like-minded individuals may be fragmenting and polarizing online society, particularly with respect to partisan differences1-4. However, our ability to measure the social makeup of online communities and in turn, to understand the social organization of online platforms, is limited by the pseudonymous, unstructured and large-scale nature of digital discussion. Here we develop a neural-embedding methodology to quantify the positioning of online communities along social dimensions by leveraging large-scale patterns of aggregate behaviour. Applying our methodology to 5.1 billion comments made in 10,000 communities over 14 years on Reddit, we measure how the macroscale community structure is organized with respect to age, gender and US political partisanship. Examining political content, we find that Reddit underwent a significant polarization event around the 2016 US presidential election. Contrary to conventional wisdom, however, individual-level polarization is rare; the system-level shift in 2016 was disproportionately driven by the arrival of new users. Political polarization on Reddit is unrelated to previous activity on the platform and is instead temporally aligned with external events. We also observe a stark ideological asymmetry, with the sharp increase in polarization in 2016 being entirely attributable to changes in right-wing activity. This methodology is broadly applicable to the study of online interaction, and our findings have implications for the design of online platforms, understanding the social contexts of online behaviour, and quantifying the dynamics and mechanisms of online polarization.

Guilty by Association: Mapping Out the Molecular Sociology of Droplet Compartments.

The molecular interactions driving the formation of stress-inducible granules have largely remained unknown. In two recent papers, Youn et al. (2018) and Markmiller et al. (2018) use proximity labeling proteomics to map out the protein interactome of stress-inducible ribonucleoprotein granules.

Emergence of dynamic properties in network hypermotifs.

Networks are fundamental for our understanding of complex systems. The study of networks has uncovered common principles that underlie the behavior of vastly different fields of study, including physics, biology, sociology, and engineering. One of these common principles is the existence of network motifs-small recurrent patterns that can provide certain features that are important for the specific network. However, it remains unclear how network motifs are joined in real networks to make larger circuits and what properties emerge from interactions between network motifs. Here, we develop a framework to explore the mesoscale-level behavior of complex networks. Considering network motifs as hypernodes, we define the rules for their interaction at the network's next level of organization. We develop a method to infer the favorable arrangements of interactions between network motifs into hypermotifs from real evolved and designed network data. We mathematically explore the emergent properties of these higher-order circuits and their relations to the properties of the individual minimal circuit components they combine. We apply this framework to biological, neuronal, social, linguistic, and electronic networks and find that network motifs are not randomly distributed in real networks but are combined in a way that both maintains autonomy and generates emergent properties. This framework provides a basis for exploring the mesoscale structure and behavior of complex systems where it can be used to reveal intermediate patterns in complex networks and to identify specific nodes and links in the network that are the key drivers of the network's emergent properties.

Elite rhetoric can undermine democratic norms.

Democratic stability depends on citizens on the losing side accepting election outcomes. Can rhetoric by political leaders undermine this norm? Using a panel survey experiment, we evaluate the effects of exposure to multiple statements from former president Donald Trump attacking the legitimacy of the 2020 US presidential election. Although exposure to these statements does not measurably affect general support for political violence or belief in democracy, it erodes trust and confidence in elections and increases belief that the election is rigged among people who approve of Trump's job performance. These results suggest that rhetoric from political elites can undermine respect for critical democratic norms among their supporters.

Flood risk behaviors of United States riverine metropolitan areas are driven by local hydrology and shaped by race.

Flooding risk results from complex interactions between hydrological hazards (e.g., riverine inundation during periods of heavy rainfall), exposure, vulnerability (e.g., the potential for structural damage or loss of life), and resilience (how well we recover, learn from, and adapt to past floods). Building on recent coupled conceptualizations of these complex interactions, we characterize human-flood interactions (collective memory and risk-enduring attitude) at a more comprehensive scale than has been attempted to date across 50 US metropolitan statistical areas with a sociohydrologic (SH) model calibrated with accessible local data (historical records of annual peak streamflow, flood insurance loss claims, active insurance policy records, and population density). A cluster analysis on calibrated SH model parameter sets for metropolitan areas identified two dominant behaviors: 1) "risk-enduring" cities with lower flooding defenses and longer memory of past flood loss events and 2) "risk-averse" cities with higher flooding defenses and reduced memory of past flooding. These divergent behaviors correlated with differences in local stream flashiness indices (i.e., the frequency and rapidity of daily changes in streamflow), maximum dam heights, and the proportion of White to non-White residents in US metropolitan areas. Risk-averse cities tended to exist within regions characterized by flashier streamflow conditions, larger dams, and larger proportions of White residents. Our research supports the development of SH models in urban metropolitan areas and the design of risk management strategies that consider both demographically heterogeneous populations, changing flood defenses, and temporal changes in community risk perceptions and tolerance.

Diagnosing by anticipation: Coordinating patient trajectories within and across social systems.

Anticipation is a fundamental aspect of social life and, following Weber, the hallmark of social action-it means trying to take others' responses to our actions into account when acting. In this article, we propose and argue the relevance of anticipation to the sociological study of diagnosis. To that end, we introduce and elaborate on the concept of diagnosing by anticipation. To diagnose by anticipation is to consider diagnoses as cultural objects imbued with meaning, to anticipate how others will respond to their meaning in situ and to adapt the choice of diagnosis to secure a desired outcome. Unlike prognosis, which seeks to predict the development of a disease, diagnosing by anticipation entails seeking to predict the development of a case and the effect of different diagnostic categories on its trajectory. Analytically, diagnosing by anticipation therefore involves a shift in diagnostic footing, from trying to identify what the case is a case of, to trying to identify which diagnosis will yield the desired case trajectory. This shift also implies a stronger focus on the mundane organisational work of operating diagnostic systems and coordinating case trajectories within and across social systems, to the benefit of the sociology of diagnosis.

Diagnosis and the practices of patienthood: How diagnostic journeys shape illness experiences.

Sociologists have a rich history of studying the process of diagnosis and how people experience illness. Yet, the sociology of diagnosis and illness experience literatures have seldom been fully integrated. Instead, these literatures highlight one element of the illness journey, wherein scholars either primarily study diagnostic processes and categories or people's illness experiences. Drawing on empirical studies that examine diagnosis and experiences of illness in varied settings (diagnosis during breast cancer surveillance, diagnosis and experience of autoimmune illness and incarcerated women's experiences of diagnoses and illness), in this article we build on our concept of regimes of patienthood to explain how diagnostic journeys, and the relations and power dynamics that manifest during this time, shape the illness experience and practices of patienthood. We construct a classification of diagnostic processes grounded in our empirical research that span (1) sudden diagnoses, (2) long, changing diagnostic journeys and (3) diagnostic journeys marked by disbelief and denial of care. Our findings demonstrate how diagnostic journeys and illness experiences are intertwined, with different diagnostic pathways impacting how illness is experienced. Analysing these categories collectively demonstrates that diagnostic journeys, while heterogenous, shape the practices that patients develop to manage health conditions and navigate unequal health-care encounters.

Disorder or difference? How clinician-patient interaction and patient age shape the process and meaning of autism diagnosis.

This article follows Blaxter's foundational call for a sociology of diagnosis that addresses the dual aspects of diagnosis-as-category and diagnosis-as-process. Drawing on video recordings from an autism clinic, we show how the process of attaching the diagnosis to a child involves interactions between clinicians, parents and children, and that in the course of such interactions, a diagnostic category officially defined in terms of deficits can instead be formulated in terms of valuable social and cognitive differences. More specifically, we show that the child's age is crucial for how clinicians formulate the diagnosis: with younger children, clinicians treat autism exclusively as a deficit to be remedied, whereas with older children, clinicians may treat autism either as a deficit or as a social-cognitive difference. Further, because older children are often co-recipients of diagnostic news, we find that clinicians carefully manage the implications such news may have for their self/identity. Finally, we suggest that (1) the equation of a diagnostic category with dysfunction is achieved in interaction; (2) the meaning of a diagnosis may vary with characteristics of its recipients; and (3) that meaning can be worked up by clinicians and recipients in ways that centre difference rather than deficit.

Detecting value(s): Digital biomarkers for Alzheimer's disease and the valuation of new diagnostic technologies.

This article explores how the meanings and values of diagnosis are being reconfigured at the interface between technological innovation and imaginaries of precision medicine. From genome sequencing to biological and digital 'markers' of disease, technological innovation occupies an increasingly central space in the way we imagine future health and illness. These imaginaries are usually centred on the promise of faster, more precise and personalised diagnosis, and the associated hope that if detected early enough disease can be effectively treated and prevented. Underpinning and reproduced through these narratives of the future is a re-conceptualisation of diagnostic processes and categories around the anticipation of future risk, as noted by recent theoretical developments in the sociology of diagnosis and related disciplines. Adding to this literature, in this article we explore what makes these emerging diagnostic arrangements valuable, to whom and how. Drawing on interviews with experts involved in the development of digital biomarkers for Alzheimer's disease, we trace how multiple and at times conflicting applications of the tools, and the value(s) attached to them, are coproduced. We thus ask what possibilities are pursued, or foreclosed, through the work of imagining the future of diagnosis.

Proxy failures in practice: Examples from the sociology of science.

Following John et al., we provide examples of failing proxies that might help to contextualize the role of proxy failures in applied research. We focus on examples from the sociology of science and illustrate how the notion of proxy failure can sharpen applied analysis, if used in a way that does not obscure other dysfunctional effects of proxies.

Examining the role of nurse executives in homecare through the lens of the Sociology of Ignorance and Critical Management Studies.

This article presents a novel theoretical approach to explore nurse executives' paradoxical identity and agency of executive and nurse in homecare organizations. This complex phenomenon has yet to be well theorized or analyzed. Through a synthesis of literature, we demonstrate that Critical Management Studies, as informed by Foucault, and the Sociology of Ignorance, can create a different understanding of the complex interplay between knowledge and nonknowledge (ignorance) that positions nurse executives in both influential and precarious ways in homecare organizations. This theoretical framework has the potential to allow for the explicit exploration of nurse executives' strategic epistemic and discursive positioning and highlights hierarchal power structures within homecare organizations. We posit that this framework, that spans nursing, management and sociology disciplines, sets a different understanding of homecare organizations as epistemic landscapes, exposing institutional knowledge and ignorance dynamics that remain largely concealed and unchallenged, yet are integral to understanding nurse executives' epistemic agency.

Is it time sociology started researching incompetence?

There appears to be a mismatch between apparent incompetence in the world and the amount of sociological research it attracts. The aim of this article is to outline a sociology of incompetence and justify its value. I begin by defining incompetence as unsatisfactory performance relative to standards. Incompetence is thus intrinsically sociological in being negotiated and socially (re)constituted. The next section foregrounds how widespread and serious incompetence is. This renders effective sociological understanding crucial to welfare. The article then systematically analyses uses of the term in the British Journal of Sociology (a good quality general journal) to assess the current state of research. This analysis fully confirms the neglect of incompetence as a research topic. The next section proposes suitable methods for preliminary incompetence research addressing distinctive challenges like the stigma of being incompetent. These sections then allow incompetence to be better contextualised by other contributing concepts like power, bureaucracy and meritocracy. The final section justifies suggestions about directions for future research.

Generations, events, and social movement legacies: Unpacking social change in English football (1980-2023).

This article critically employs the case of association football in England, from 1980 to 2023, as a social movement timescape, to examine the political consciousness and long-term mobilisations of a generation of football supporter activists, and their capacity to influence politics, and respond to new, emerging, critical junctures, through networks of trust and shared memories of historical events. This is of crucial importance to sociology because it reveals the tensions between what are considered legitimate and illegitimate social practices which characterise contemporary society's moral economy. Focusing on temporal contestations over regulation, policing, governance and cultural rituals, the article deconstructs the role of generations in social movements, and critically synthesises relational-temporal sociology and classic and contemporary work on the sociology of generations, to show how legacy operates as a multifaceted maturing concept of power and time. In English football's neoliberal timescape, the supporters' movement has reached a critical juncture; the future will require a new generation of activists, to negotiate, resist and contest the new hegemonic politics of social control and supporter engagement.

Life funds, urban development, and the experimental practices of financial sociology.

How did the Norwich Union, a life and general insurance company, come to see itself as a 'local developer with people always at the centre of our planning'? This article explores how a small number of insurance companies, capitalising on their long history of property investment, used their investment funds, or 'life funds', to transform the built environment of UK in the twentieth century. In the postwar period life funds were contracted by local governments to finance, plan and develop solutions to urban issues that paralleled those targeted by post-war welfare reforms. This involved companies in developing expertise, working practices, instruments and collaborative arrangements that are not adequately represented as financial investment. Ventures into development on this scale had also to be ventures in futures planning, calculated bets on how people would - and how they should - live, work and spend. These are enterprises that I characterise as 'experimental practices of financial sociology' as a provocation that acknowledges first, that non-sociologists sometimes devise huge sociological experiments and second, that the separation of economics from sociology, and of finance from society, is a disciplinary move that is far less strictly enacted outside the academy.

Radicalisation studies: An emerging interdisciplinary field.

This research note provides an overview of Radicalisation Studies as an emerging interdisciplinary field aimed at developing more holistic understandings of how and why individuals and groups turn to extreme ideologies and political violence. It traces the evolution of radicalisation research across core social science disciplines, including sociology, psychology, anthropology, and political science. While this burgeoning scholarship has expanded knowledge, persistent gaps remain due to studying radicalisation in disciplinary silos. To address this fragmentation, the research note proposes an integrated Radicalisation Studies approach grounded in critical social theory and reflexivity. This paradigm synthesises concepts and mechanisms from across disciplines to investigate the complex interplay between individual vulnerabilities, group dynamics, and broader socio-political contexts in generating radicalisation. The note outlines theoretical foundations, guiding research questions, and methodological strategies for this new field focused on mixed-methods, multi-level analysis. Radicalisation Studies holds promise for advancing theoretical integration, contextualised explanations, critical perspectives on radicalisation discourse, and evidence-based preventative policies. While challenges remain in institutionalising this emerging field, Radicalisation Studies has the potential to steer research towards greater interdisciplinarity and the nuanced understandings necessary to elucidate this complex phenomenon. The research note aims to spur debate on constructing Radicalisation Studies as a viable scholarly enterprise.

Völkerpsychologie as a field science: José Miguel de Barandiarán and Basque ethnology.

José Miguel de Barandiarán considered the central figure of Basque anthropology, played a prominent role in the Basque people's cultural rescue (material and spiritual). His dual status as an ethnologist and priest prepared him to study collective mentalities and rural societies. However, the scientific approach of the Völkerpsychologie (roughly translated as ethnic psychology), as proposed by Wilhelm Wundt, greatly influenced him and aroused broad interests of ethnological and sociological-religious concerns. This essay examines the scope and depth of Wundt's influence on Barandiarán, and suggests that, by combining the techniques of folklore with those of ethnography, Barandiarán stamped Basque anthropology with a unique defining quality in Europe.

Psychiatric epidemiology and the Chicago School of Sociology.

This article explores the Chicago School of Sociology's influence on psychiatric epidemiology. While the Chicago School text usually associated with psychiatric epidemiology is the 1939 book by Faris and Dunham, it is important to acknowledge the influence of earlier Chicago School projects during the 1920s. These projects, tackling everything from homelessness and delinquency to the ghetto and suicide, provided models not only for Faris and Dunham, but also for numerous methodological and theoretical insights for the social psychiatry projects that would emerge after World War II. The social sciences and the humanities still have important roles to play in informing contemporary approaches to psychiatric epidemiology and deriving ways to tackle the socio-economic problems that contribute to mental illness.