Abstract:

Frequent multiple-emergency events and their dissemination within deeply mediatized environments substantially aggravate public psychological-security risks and challenge traditional social-risk-governance models dominated by physical rescue and administrative control. Systematic analysis of mediatized-dissemination features for multiple emergencies shows that collective psychological-security-risk generation constitutes a dynamic process where physical event stimuli gradually evolve into broad-based social-psychological crises. This process unfolds across four phases: event impact, media amplification, emotional contagion, and cognitive bias. Deep media involvement in risk evolution grants the media dual roles within governance structures beyond the traditional information-intermediary function: the media operate both as governance subjects with agenda-setting, public-opinion-supervision and consensus-building capacities, and as governance instruments for information transmission, public-opinion assessment and social mobilization. To build mediated-governance models for collective psychological-security risks, public psychological security should be taken as core governance objective. Public trust and psychological resilience shall be strengthened through transparent and authoritative information supply, interpretable risk communication and accessible psychological services. The model emphasizes collaborative governance among government bodies, media outlets, platforms, experts and the general public. It promotes linkage and coupling across three layers: institutional-layer policies, regulations and ethical norms; platform-layer artificial-intelligence and big-data technical systems; and practical-layer risk communication and psychological intervention. It forms a four-step technical-governance closed-loop covering data monitoring, intelligent assessment, precise intervention and effect evaluation, ultimately shifting mediated governance from post-event response toward whole-process coverage.

Key words: multiple emergencies, group psychology, medium, mediated governance, risk, social risk management