Algorithmic Amplification and Democratic Communication in Nigerian Digital Public Spheres

This study provides an original theoretical and empirical analysis of how algorithmic amplification mechanisms on social media platforms shape democratic communication in Nigerian digital public spheres, contributing to public sphere theory, platform studies, and African democratic communication scholarship. Habermas's ideal of the rational-critical public sphere has been extensively debated in the digital media context, but its adaptation to algorithmic media environments in African democratic systems with distinct deliberative traditions, political cultures, and platform usage patterns has not been theoretically developed. This study employs a mixed-method design combining computational analysis of 3.2 million Nigerian political posts across Twitter, Facebook, and YouTube to measure algorithmic engagement amplification patterns, interview-based research with 30 Nigerian political communicators, journalists, and digital rights advocates on their experiences and strategies for navigating algorithmic environments, and experimental research with 360 Nigerian social media users testing the effect of algorithmic exposure manipulation on deliberative quality of political discussion. Public sphere quality indicators assessed include argument rationality, cross-partisan engagement, inclusion of diverse voices, and exposure to challenging viewpoints. Findings reveal that algorithmic amplification in Nigerian digital contexts systematically privileges outrage and tribal signalling over deliberative exchange, with engagement-optimised content suppressing nuanced political argument. Religious and ethnic identity signals are among the strongest amplification triggers in Nigerian political content. Younger users show greater awareness of algorithmic manipulation but limited ability to circumvent it. The study contributes an original algorithmic public sphere theory for Nigeria and recommends platform algorithmic accountability legislation.

Keywords: algorithmic amplification, public sphere, Nigeria, democratic communication, digital platforms.