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University of Massachusetts Amherst

Computational Social Science

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Full-Text Articles in Quantitative, Qualitative, Comparative, and Historical Methodologies

A Relational Investigation Of Political Polarization On Twitter, Tyler Walton Jun 2022

A Relational Investigation Of Political Polarization On Twitter, Tyler Walton

Masters Theses

Over the last several decades there has been a debate among social scientists on whether the United States has become, or is in the process of being, politically polarized. These conversations started with discussion of the “culture wars,” moved to the discussion of selective exposure and media outrage, and currently involve concerns about online radicalization and the spread of online misinformation. Throughout these themes one characteristic has remained constant: a lack of systematic evidence despite anecdotes and feelings of animosity between the two parties. Today researchers are beginning to shift from operationalizing political polarization as growing divides in attitudes towards …


Three Essays On Network Dynamics And Liminality, Diego F. Leal Nov 2018

Three Essays On Network Dynamics And Liminality, Diego F. Leal

Doctoral Dissertations

This dissertation focuses on the emergence and evolution of social networks by paying particular attention to the spanning of cultural boundaries that segregate actors in the context of specific societies. In particular, I use systems science methods to study the bridging of cultural holes in small and relatively dense artificial societies, as well as in an American high school. I also study the significance of local triadic configurations in giving rise to the highly hierarchical system of aggregate-level migration flows in place in the Americas during the late 20th century. I use the concept of liminality as a way to …