Some social connections are stronger than others. People have not only friends, but also best friends. Social scientists have long recognized this characteristic of social connections and researchers ...frequently use the term tie strength to refer to this concept. We used online interaction data (specifically, Facebook interactions) to successfully identify real-world strong ties. Ground truth was established by asking users themselves to name their closest friends in real life. We found the frequency of online interaction was diagnostic of strong ties, and interaction frequency was much more useful diagnostically than were attributes of the user or the user's friends. More private communications (messages) were not necessarily more informative than public communications (comments, wall posts, and other interactions).
Human behaviour is thought to spread through face-to-face social networks, but it is difficult to identify social influence effects in observational studies, and it is unknown whether online social ...networks operate in the same way. Here we report results from a randomized controlled trial of political mobilization messages delivered to 61 million Facebook users during the 2010 US congressional elections. The results show that the messages directly influenced political self-expression, information seeking and real-world voting behaviour of millions of people. Furthermore, the messages not only influenced the users who received them but also the users' friends, and friends of friends. The effect of social transmission on real-world voting was greater than the direct effect of the messages themselves, and nearly all the transmission occurred between 'close friends' who were more likely to have a face-to-face relationship. These results suggest that strong ties are instrumental for spreading both online and real-world behaviour in human social networks.
Opting Out of Political Discussions Settle, Jaime E.; Carlson, Taylor N.
Political communication,
07/2019, Letnik:
36, Številka:
3
Journal Article
Recenzirano
Methodological limitations have hindered our ability to understand the conditions that make individuals seek or avoid political discussions. We introduce a methodological approach to assess ...communication preferences in contexts where these choices are difficult to measure. We conduct three experiments to examine how the characteristics of the people in a discussion, as well as its topic, influence an individual's "price" to participate. Participants indicated how much they would need to be compensated to participate in a short discussion about a randomly assigned topic (political or nonpolitical) under different group compositions (co-partisans, out-partisans, or a mixed group). We find that individuals demanded significantly more compensation to engage in a discussion with out-partisans than with co-partisans, for both political and non-political topics.
Correlated genotypes in friendship networks Fowler, James H; Settle, Jaime E; Christakis, Nicholas A
Proceedings of the National Academy of Sciences - PNAS,
02/2011, Letnik:
108, Številka:
5
Journal Article
Recenzirano
Odprti dostop
It is well known that humans tend to associate with other humans who have similar characteristics, but it is unclear whether this tendency has consequences for the distribution of genotypes in a ...population. Although geneticists have shown that populations tend to stratify genetically, this process results from geographic sorting or assortative mating, and it is unknown whether genotypes may be correlated as a consequence of nonreproductive associations or other processes. Here, we study six available genotypes from the National Longitudinal Study of Adolescent Health to test for genetic similarity between friends. Maps of the friendship networks show clustering of genotypes and, after we apply strict controls for population stratification, the results show that one genotype is positively correlated (homophily) and one genotype is negatively correlated (heterophily). A replication study in an independent sample from the Framingham Heart Study verifies that DRD2 exhibits significant homophily and that CYP2A6 exhibits significant heterophily. These unique results show that homophily and heterophily obtain on a genetic (indeed, an allelic) level, which has implications for the study of population genetics and social behavior. In particular, the results suggest that association tests should include friends' genes and that theories of evolution should take into account the fact that humans might, in some sense, be metagenomic with respect to the humans around them.
Undergraduate students today face a more demanding and competitive labor market than their parents’ generation. In response, some pursue double majors to signal breadth to potential employers and to ...improve their job prospects. Some students also realize that a strong signal of workplace readiness is acquiring in-demand skills through independent and collaborative research. In this article, four professors at an undergraduate-focused public university in the United States share their experiences working with undergraduate students on research, focusing on the “supply side” of student research training and mentoring. We discuss how institutions can support differently situated faculty members, who face different career incentives and constraints, to integrate undergraduates in their research. We also address the limits of what is possible for faculty‐student research and suggest ways to overcome them.
While everyone deals with stressful situations on a daily basis, individuals have different behavioral reactions to that stress. We argue that life stress also affects individuals' political ...behavior, but this effect is contingent on their past political involvement. While individuals familiar with and engaged in the political process are unaffected when confronted with stress in life, individuals who are not routinely involved in the electoral process are more likely to disengage from politics. To test the differential effects of stress on the likelihood of political involvement, we fielded two experiments, one preceding the US. presidential election of 2012 and the second preceding the 2013 municipal election in a small Midwestern American town. We find that when triggered to consider life Stressors unrelated to politics, individuals without a history of past participation in politics are less likely to vote while individuals who are habitual voters are unaffected.
Political Chameleons Carlson, Taylor N.; Settle, Jaime E.
Political behavior,
12/2016, Letnik:
38, Številka:
4
Journal Article
Recenzirano
Individuals do not always express their private political opinions in front of others who disagree. Neither political scientists nor psychologists have been able to firmly establish why this behavior ...occurs. Previous research has explored, at length, social influence on political attitudes and persuasion. However, the concept of conformity does not involve attitude change or persuasion; it more accurately involves self-censoring to match a socially desirable norm. In an effort to improve our understanding of this behavior, we conduct two experiments to investigate perceptions and behavioral responses to contentious political interactions. Study 1 asked participants to predict how a hypothetical character would respond to a variety of political interactions among coworkers. In Study 2, participants discussed political issues with confederates who were scripted to disagree with them. The studies reveal that individuals are uncomfortable around political interactions in which they hold an opinion counter to the group. Participants both expected a hypothetical character to conform in Study 1 and actually conformed themselves in the lab session in Study 2.
Most Americans are sorted into social networks that are largely politically homogeneous. A large body of political science research has explored the behavioral implications of being embedded in a ...politically homogeneous or heterogeneous network, but substantially less attention has been given to explaining why some people find themselves in politically homogeneous or heterogeneous social networks. In this article, we explore the psychological and physiological underpinnings of political network homogeneity. We use social network data from an original survey of 129 undergraduates paired with lab experimental evidence that measures individuals' physiological reactivity to an anticipated political discussion. Using our original survey and a separate nationally representative survey, we find suggestive evidence that individuals who are more socially anxious are more likely to share partisanship with their social network ties. Moreover, we find that individuals who experienced a greater increase in heart rate when anticipating a political discussion were more likely to be in homogeneous discussion networks, but we do not find a relationship between electrodermal activity and network homogeneity. Aversion to psychological and physiological discomfort induced by political discussions could contribute to social polarization in the American public.
Political socialization research has focused on the role of parents, extracurricular activities, and the school curriculum during adolescence on shaping early adult political behavior (Beck & ...Jennings, 1982; Flanagan, Syvertsen, & Stout, 2007; Torney-Purta, Richardson, & Barber, 2004). However, no study to date has examined how properties of adolescents’ social networks affect the development of adult political outcomes. Using social network analysis, we find that both a respondent’s social integration in high school and his friends’ perceptions of their own social integration affect the respondent’s later political behavior as a young adult. Peer and network effects are at work in political socialization. This has important implications for our understanding of the development of social capital, political trust, and political participation, as well as our general understanding about how one’s social network influences one’s own attitudes and behavior.
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