heuristic-systematic-model

Heuristic-systematic model is a dual-process framework describing how people process persuasive information — either through effortful, systematic evaluation of argument quality or through heuristic shortcuts like source credibility, message length, or consensus cues. Parameters: (1) processing mode — systematic (high effort, content-focused) versus heuristic (low effort, cue-based); (2) motivation and capacity — both must be sufficient for systematic processing to activate; (3) heuristic reliance — when motivation or capacity falls, default heuristics (e.g., 'experts are correct', 'agreement implies truth') govern judgment. The model treats heuristic and systematic processing as independent dimensions, not opposites: people can use both simultaneously. Persistence mechanism: academic theory in social psychology and communication studies, textbook transmission, and applied frameworks in advertising, risk communication, and health messaging that operationalize the model's predictions. [formal: heuristic-systematic processing | substrate: mind | horizon: hours | explicit: yes | epoch: 0.92]