SignificanceSocial media sites are often blamed for exacerbating political polarization by creating “echo chambers” that prevent people from being exposed to information that contradicts their preexisting beliefs. We conducted a field experiment that offered a large group of Democrats and Republicans financial compensation to follow bots that retweeted messages by elected officials and opinion leaders with opposing political views. Republican participants expressed substantially more conservative views after following a liberal Twitter bot, whereas Democrats’ attitudes became slightly more liberal after following a conservative Twitter bot—although this effect was not statistically significant. Despite several limitations, this study has important implications for the emerging field of computational social science and ongoing efforts to reduce political polarization online.

A poisonous cocktail of othering, aversion, and moralization poses a threat to democracy

Recent studies report significant cross-national variation in the conceptual distinctions or “symbolic boundaries” used by majority groups to construct notions of “us” and “them.” Because this literature compares only a handful of countries, the macro-level forces by which certain symbolic boundaries become more salient than others remain poorly understood. This article provides the first panorama of these processes by comparing the relative salience or “configuration” of multiple symbolic boundaries in 21 European countries. I use fuzzy-set analyses of data from the 2003 European Social Survey to create a typology of symbolic boundary configurations. The results indicate that the symbolic boundaries deployed by the general public do not correspond to the official “philosophies of integration” emphasized in the literature. Moreover, the data suggest previous comparisons have focused too heavily on Western Europe, overlooking important variation in other regions of Europe where immigration began more recently. I generate hypotheses to explain this newfound variation using demographic, socioeconomic, institutional, and historical data from quantitative and qualitative sources. The article concludes with examples of how these hypotheses can be combined by future studies toward a theory of “boundary-work.”

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The metaphor of resonance often describes the fit between a message and an audience’s worldviews. Yet scholars have largely ignored the cognitive processes audiences use to interpret messages and interactions that determine why certain messages and other cultural objects appeal to some but not others. Drawing on pragmatism, we argue that resonance occurs as cultural objects help people puzzle through practical challenges they face or construct. We discuss how cognitive distance and the process of emotional reasoning shape the likelihood of cultural resonance. We argue resonance is an emergent process structured by interactions between individuals that shape each other’s interpretation of cultural objects, diffuse objects through interactional circuits, and create opportunities for resonance among people facing similarly shaped problems. Our approach thus identifies new processes at micro, meso, and macro levels of analysis that shape resonance and describes the pathways that might allow resonance to crystallize into broader mobilization and social change.