The Spiral of Silence in Nigerian Online Political Discourse: A Cross-Platform Experimental Study

This study tests and extends the spiral of silence theory in the context of Nigerian online political discourse, examining whether the theory's core propositions about opinion expression and suppression hold in a culturally distinct, multi-ethnic, and high-political-risk environment. Spiral of silence theory, originally developed by Noelle-Neumann in 1970s Germany, predicts that individuals who perceive their opinion to be in the minority will suppress public expression to avoid social isolation. Its applicability in high-surveillance, ethnically polarised environments where non-expression may be driven by fear rather than minority perception requires theoretical revision and empirical testing. This study employs a cross-platform online survey experiment with 840 Nigerian respondents drawn from Twitter, Facebook, and WhatsApp user pools, using factorial vignette design to manipulate perceived opinion climate (majority, minority, and uncertain), platform visibility (high versus low), political topic sensitivity (low, medium, high risk), and ethnic context (in-group versus out-group majority). Opinion expression willingness and anxiety are the primary outcome variables. Structural equation modelling tests the full extended spiral of silence model. Findings reveal that fear of government retaliation, not social isolation anxiety, is the primary suppression mechanism on high-sensitivity political topics in Nigeria, representing a contextual revision of the original theory. Platform visibility significantly moderates expression willingness but differently across topic risk categories. Ethnic composition of perceived majority has a stronger effect than political opinion composition alone. The study contributes an original culturally revised spiral of silence model for high-risk political communication environments and proposes theoretical extensions applicable beyond Nigeria.

Keywords: spiral of silence, online political discourse, Nigeria, cross-platform experiment, theoretical extension.