Evidence that Intentions Based on Attitudes Better Predict Behaviour than Intentions Based on Subjective Norms
Sheeran, P., Norman, P., & Orbell, S. (1999). Evidence that intentions based on attitudes better predict behaviour than intentions based on subjective norms. European Journal of Social Psychology, 29(2-3), 403-406. doi:10.1002/(SICI)1099-0992(199903/05)29:2/3<403::AID-EJSP942>3.0.CO;2-A.
Self-determination theory suggests that better prediction of behaviour will be observed from intentions based on attitudes than intentions based on subjective norms. In a study of 187 undergraduates, analyses of the intention–behavior relationship for both internally vs externally/attitudinally vs normatively controlled people and internally vs externally/attitudinally vs normatively controlled behaviours supported this hypothesis.
