PDF(Pubmed)
Abstract：
In this article, we present the findings of a comprehensive longitudinal social network analysis conducted on Twitter across four consecutive election campaigns in Spain, spanning from 2015 to 2019. Our focus is on the discernible trend of increasing partisan and ideological homogeneity within interpersonal exchanges on this social media platform, alongside high levels of networking efficiency measured through average retweeting. This diachronic study allows us to observe how dynamics of party competition might contribute to perpetuating and strengthening network ideological and partisan homophily, creating \'epistemic bubbles\' in Twitter, yet showing a greater resistance to transforming them into \'partisan echo-chambers.\' Specifically, our analysis reveals that the rise of a new radical right-wing party (RRP), Vox, has heightened ideological homogeneity among users across the entire ideological spectrum. However, this process has not been uniform. While users aligned with mainstream political parties consistently share content that reinforces in-party affinity, resulting in highly efficient \'epistemic bubbles,\' the emergence of the RRP has given rise to a distinct group of users associated with the most extreme partisan positions, characterized by a notable proportion of out-partisan hostility content, which has fostered the creation of low-efficient \'partisan echo-chambers.\'
摘要：
在这篇文章中,我们介绍了在Twitter上进行的一项全面的纵向社交网络分析的结果，该分析涉及西班牙连续四次竞选活动，从2015年到2019年。我们的重点是在这个社交媒体平台上的人际交流中，党派和意识形态同质性增加的明显趋势，以及通过平均转发衡量的高水平的网络效率。这项历时性的研究使我们能够观察到政党竞争的动态如何有助于延续和加强网络意识形态和党派的同性恋，在Twitter中创建“认知泡沫”，然而，在将它们转变为党派回声室方面表现出更大的阻力。\'具体来说，我们的分析表明，一个新的激进右翼政党(RRP)的崛起，Vox,提高了整个意识形态范围内用户之间的意识形态同质性。然而,这个过程并不统一。虽然与主流政党保持一致的用户始终共享增强党内亲和力的内容，产生高效的“认知泡沫”，“RRP的出现产生了与最极端的党派立场相关的独特用户群体，以相当比例的党派外敌意内容为特征，这促进了低效率的党派回声室的创建。\'
