Donating blood and organs: using an extended theory of planned behavior perspective to identify similarities and differences in individual motivations to donate
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Due to the critical shortage and continued need of blood and organ donations (ODs), research exploring similarities and differences in the motivational determinants of these behaviors is needed. In a sample of 258 university students, we used a cross-sectional design to test the utility of an extended theory of planned behavior (TPB) including moral norm, self-identity and in-group altruism (family/close friends and ethnic group), to predict people's blood and OD intentions. Overall, the extended TPB explained 77.0% and 74.6% of variance in blood and OD intentions, respectively. In regression analyses, common contributors to intentions across donation contexts were attitude, self-efficacy and self-identity. Normative influences varied with subjective norm as a significant predictor related to OD intentions but not blood donation intentions at the final step of regression analyses. Moral norm did not contribute significantly to blood or OD intentions. In-group altruism (family/close friends) was significantly related to OD intentions only in regressions. Future donation strategies should increase confidence to donate, foster a perception of self as the type of person who donates blood and/or organs, and address preferences to donate organs to in-group members only.
Health Education Research
Copyright 2013 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, Donating blood and organs: using an extended theory ofplanned behavior perspective to identify similarities anddifferences in individual motivations to donate, Health Education Research, Vol. 28 (6), 2013, pp. 1092-1104. is available online at: dx.doi.org/10.1093/her/cyt078.
Health, Clinical and Counselling Psychology