Health Behavior Change and Donor Registration

Applied health-behavior change models and organ-donor registration intervention evidence. Covers the major theoretical frameworks used to design health-behavior campaigns, applied specifically to donor-registration campaigns.

Frameworks: Health Belief Model (HBM — perceived susceptibility, severity, benefits, barriers, cues to action, self-efficacy); Theory of Planned Behavior / Reasoned Action (TPB/TRA — attitude, subjective norm, perceived behavioral control → intention → behavior, and the intention-action gap); Extended Parallel Process Model (EPPM — threat × efficacy interaction, danger-control vs fear-control responses, message backfire when threat is high but efficacy is low); COM-B (capability, opportunity, motivation → behavior).

Donor-registration specifics: the willingness-registration GAP (why polling support far exceeds actual registration); intervention evidence for mandated choice, prompted choice, active choice (US); opt-in vs opt-out / presumed consent (behavioral-defaults literature, Johnson & Goldstein); reciprocity priming; loss-framing; social norms; the UK Behavioural Insights Team RCT on 1M+ users showing framing effects at the DVLA registration point.

Route SDT/Fogg/habit loops to applied-psychology (behavior-change-psychology reference); system-level OPO/OPTN/consent law to venture-organ-donation-system; policy advocacy to venture-organ-donation-frontier.