Incorporating perceived barriers into theory of planned behaviour (TPB) model to predict ...
journals.plos.org
Adding "perceived barriers" to the classic Theory of Planned Behaviour reveals a missing link in why people fail to act on their own intentions — with real implications for public health nudges.
Theory of Planned BehaviourHealth Belief ModelBehavioural IntentionPerceived Behavioural Control
Theory Briefing
- The study integrates perceived barriers into TPB's three pillars — attitude, subjective norms, and perceived behavioural control — to sharpen its predictive power.
- Perceived barriers act as a distinct psychological brake, showing that good intentions alone are not enough to drive real-world behaviour change.
- Findings suggest health interventions should directly target obstacle perception, not just motivation, to close the gap between intention and action.