Comunicação e radicalismo partidário no Brasil: hábitos de consumo de mídia, bolhas informacionais e comportamento político extremista

Abstract

This dissertation investigates the relationship between media consumption habits and partisan radicalism in Brazil, with the purpose of identifying how these media ecosystems, including social networks, can enable the growth of extremist political behaviors. To this end, it uses a quantitative approach, analyzing data from the opinion survey "Political Polarization-UnB," conducted between June 12th and 21st, 2024, with a total sample of 2,506 face-to-face interviews. Initially, the topic is contextualized, the problem is stated, the hypothesis, objectives, and justification for conducting the research are presented, along with an overview of recent events in Brazil. Following this, the theoretical framework is presented, highlighting important concepts such as political polarization, partisan radicalism, media, and citizenship. Information on selective exposure, echo chambers, and information bubbles is also provided. The following presents the results of the linear and logistic regression models, which were applied to a subsample of 1,221 people, comprising the group that answered questions about political violence. Telegram showed statistical significance in both scenarios, indicating that phenomena such as information bubbles, echo chambers, and selective exposure can contribute to the growth of extremist political behaviors. Jornal Nacional showed a positive and significant effect in the logistic regression model, pointing to the existence of hostile consumption and conflict salience.