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Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: Theory Content, Question-Behavior Effects, or Form of Delivery Effects for Intention to Become an Organ Donor? Two Randomized Trials
Author(s): Doyle, Frank
Morgan, Karen
Mathew, Mary
Palatty, Princy
Kamat, Prashanti
Doherty, Sally
Quigley, Jody
Henderson, Josh
O’Carroll, Ronan
Keywords: organ donation
affective attitudes
question-behavior effect
randomized trial
psychological theory
public health
Issue Date: 11-Apr-2019
Date Deposited: 12-Apr-2019
Citation: Doyle F, Morgan K, Mathew M, Palatty P, Kamat P, Doherty S, Quigley J, Henderson J & O’Carroll R (2019) Theory Content, Question-Behavior Effects, or Form of Delivery Effects for Intention to Become an Organ Donor? Two Randomized Trials. International Journal of Environmental Research and Public Health, 16 (7), Art. No.: 1304.
Abstract: Eliciting different attitudes with survey questionnaires may impact on intention to donate organs. Previous research used varying numbers of questionnaire items, or different modes of intervention delivery, when comparing groups. We aimed to determine whether intention to donate organs differed among groups exposed to different theoretical content, but similar questionnaire length, in different countries. We tested the effect of excluding affective attitudinal items on intention to donate, using constant item numbers in two modes of intervention delivery. Study 1: A multi-country, interviewer-led, cross-sectional randomized trial recruited 1007 participants, who completed questionnaires as per group assignment: including all affective attitude items, affective attitude items replaced, negatively-worded affective attitude items replaced. Study 2 recruited a UK-representative, cross-sectional sample of 616 participants using an online methodology, randomly assigned to the same conditions. Multilevel models assessed effects of group membership on outcomes: intention to donate (primary), taking a donor card, following a web-link (secondary). In study 1, intention to donate did not differ among groups. Study 2 found a small, significantly higher intention to donate in the negatively-worded affective attitudes replaced group. Combining data yielded no group differences. No differences were seen for secondary outcomes. Ancillary analyses suggest significant interviewer effects. Contrary to previous research, theoretical content may be less relevant than number or valence of questionnaire items, or form of intervention delivery, for increasing intention to donate organs.
DOI Link: 10.3390/ijerph16071304
Rights: This is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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