Algorithmic Gatekeeping for Professional Communicators av Arjen van Dalen

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<P>This book provides a critical study of the power, trust and legitimacy of algorithmic gatekeepers. </P><P>The news and public information which citizens see and hear is no longer solely determined by journalists, but increasingly by algorithms. Van Dalen demonstrates the gatekeeping power of social media algorithms by showing how they affect exposure to diverse information and misinformation, and shape the behaviour of professional communicators. Trust and legitimacy are foregrounded as two crucial antecedents for the acceptance of this algorithmic power. This study reveals low trust among the general population in algorithms performing journalistic tasks and a perceived lack of legitimacy of algorithmic power among professional communicators. Drawing on case studies from YouTube and Instagram, this book challenges technological deterministic discourse around ¿filter bubbles¿ and ¿echo chambers¿ and shows how algorithmic power is situated in the interplay between platforms, audience