A City Guide To Acheng for n The HBM is a static model, suggesting that various beliefs occur simultaneously in a one-off’ assessment. This does not allow for a staged or dynamic process of change in beliefs, as later models show is crucial. n The HBM assumes that human beings are rational decision makers, which is not necessarily the case. n The HBM may overestimate the role of threat’. Perceived susceptibility has not consistently been found to be a significant predictor of health behaviour change. n Even if perceived susceptibility is sometimes found to be predictive, it is important that health promotion messages do not overuse fear arousal as this has been shown to be counter-productive to behaviour change by provoking denial e.g. A City Guide To Acheng 2016.