From perception to action in public health emergencies: a three-gate integrated framework linking risk perception, information engagement, and protective responses.

Public health emergencies often show a gap between heightened risk perception and sustained protective behavior. People may seek large amounts of information yet fail to adopt recommended measures, implement them inconsistently, or abandon them as guidance evolves and fatigue accumulates. To explain these patterned breakdowns, this paper develops an integrated framework linking risk perception and affect to information engagement and, in turn, to protective responses. The framework synthesizes the Protective Action Decision Model and the Risk Information Seeking and Processing model to treat information engagement-exposure, seeking or avoidance, verification, and processing mode-as the primary bridge between perception and action. It further distinguishes three behavioral outcomes that are frequently conflated in crisis research: adoption, implementation quality, and persistence. Building on this integration, we propose that, in voluntary and information-rich public health crises, sustained high-quality protective responses are most likely when three enabling conditions are met: a trust gate that supports acceptance of messengers and institutions, an efficacy gate that converts threat into feasible action pathways under real constraints, and an information ecology gate that preserves comprehension and belief accuracy under overload and misinformation. The framework yields testable propositions about when perceived risk produces calibrated seeking, guideline-consistent action, and sustained routines, as well as identifiable breakdown signatures when any gate is substantially weakened. By translating the model into actionable design principles for communication and intervention, this theory provides a parsimonious account of why response efforts succeed or fail and offers a practical agenda for strengthening public health preparedness in future crises.