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Julia Kristeva is one of the most influential French thinkers of the twentieth century and is best known for her work in linguistics. Even though her work has been very influential, the political implications of her writings have so far been neglected. Kristeva and the Political is the first book to explore the relation of Kristeva's work to the political and casts new light on her work, connecting her to recent developments in literary theory, political theory, and cultural studies. In particular it shows how Kristeva's account of the unconscious and psychoanalysis generally, widens the notion of the political. Each chapter introduces a fundamental theme in Kristeva's work, highlighting a specific period of development in her thought and drawing on texts from the 1960s through to the 1990s. Themes addressed include Kristeva's theory of discourse, the theory of the subject, the notion of alterity, feminism and marginality and her theory known as the 'politics of meaning'. Kristeva and the Political also shows how Kristeva's notions of the political draw on a rich array of thinkers and writers, from Freud, Melanie Klein and Lacan, to Proust and Marguerite Duras.

Facilitating democratic discourse, or people's ability to access factual information in service of thoughtful discussion of social issues, is critical for democracies to function properly. However, with the rise of online fake news, misinformation, and political extremism, it is becoming increasingly difficult to have civil conversations on the internet. As a first step to addressing this issue, scholars need to understand how the current design of online environments shapes peoples ability to respectfully engage across social and political differences. In this dissertation, I investigate how common social media design features, such as hashtags directly impact the quality of democratic discourse at-scale. Using natural language processing, statistics, and experimental design, I empirically demonstrate how linguistic behavior and the presence of political hashtags in online social media news articles impact the quality of discussions surrounding race, gender, and equality. Through my findings, I provide a theoretical examination of functionality and intertextuality as critical aspects of online design. Online design considerations that consider functionality alone tend to promote a digital public sphere that predominantly favors hashtag (or content) producers over non-users and passive content consumers. The sole emphasis on the functionality of design features drives frequency-driven research practices that prioritize discourse conditions for hashtag producers through volume-based definitions of discussion quality. Collectively, the research studies in this thesis are motivated by a desire to understand how online spaces can be better designed to foster interaction and discourse that can bridge rather than sharpen social differences. Results from this dissertation research strongly indicate that scholars, designers, and engineers need to rethink and evaluate how current methodological approaches that prioritize the functionality of online design choices are limiting the way we understand the quality of democratic discourse on the internet. As a step towards this direction, I evoke Kristevas notion of intertextuality to demonstrate how online design choices facilitate the power of language in which important social topics are discussed across networks. ; Published version ; PhD in Informatics