Disclosing donation decisions: the role of organ donor prototypes in an extended theory of planned behaviour
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This study explored the role of donor prototype evaluations (perceptions of the typical organ donor) in organ donation communication decisions using an extended theory of planned behaviour (TPB) model. The model incorporated attitude, subjective norm, perceived behavioural control, moral norm, self-identity, and donor prototype evaluations to predict intentions to record consent on an organ donor register and discuss the organ donation decision with significant others. Participants completed surveys assessing the extended TPB constructs related to registering (n?=?359) and discussing (n?=?282). Results supported a role for donor prototype evaluations in predicting discussing intentions only. Both extended TPB structural equation models were a good fit to the data, accounting for 74 and 76% of the variance in registering and discussing intentions, respectively. Participants' self-reported discussing behaviour (but not registering behaviour given low numbers of behavioural performers) was assessed 4 weeks later, with discussing intention as the only significant predictor of behaviour (Nagelkerke R2?=?0.11). These findings highlight the impact of people's perceptions of a typical donor on their decisions to discuss their organ donation preference, assisting our understanding of the factors influencing individuals' communication processes in efforts to bridge the gap between organ supply and demand.
Health Education Research
© 2009 Oxford University Press. This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Health Education Research following peer review. The definitive publisher-authenticated version Disclosing donation decisions: The role of organ donor prototypes in an extended theory of planned behavior, Health Education Research, Vol. 24(6), 2009, pp. 1080-1092 is available online at: dx.doi.org/10.1093/her/cyp028.
Health, Clinical and Counselling Psychology