Digital Echo Chambers as Phenomenon of Political Space

This article attempts to provide a comprehensive overview of the academic literature on the subject, examining the different approaches, their similarities and general differences, advantages and disadvantages, and providing a consolidated and critical perspective that will hopefully be useful for future research in the field. The paper presents the results of a systematic review of Western academic studies on the existence of echo chambers in social media, an initial classification of the literature and the identification of research patterns. The authors show how conceptual and methodological choices influence research findings on the topic. Future research should take into account the potential shortcomings of different approaches and the significant potential of linking data.