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The Blood Donor Identity Survey: a multidimensional measure of blood donor motivations
Author(s) -
France Christopher R.,
Kowalsky Jennifer M.,
France Janis L.,
Himawan Lina K.,
Kessler Debra A.,
Shaz Beth H.
Publication year - 2014
Publication title -
transfusion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.045
H-Index - 132
eISSN - 1537-2995
pISSN - 0041-1132
DOI - 10.1111/trf.12588
Subject(s) - amotivation , confirmatory factor analysis , donation , sample (material) , blood donor , identity (music) , psychology , measure (data warehouse) , reliability (semiconductor) , social psychology , structural equation modeling , clinical psychology , medicine , statistics , intrinsic motivation , immunology , computer science , data mining , mathematics , chemistry , power (physics) , physics , chromatography , quantum mechanics , acoustics , economics , economic growth
Background Evidence indicates that donor identity is an important predictor of donation behavior; however, prior studies have relied on diverse, unidimensional measures with limited psychometric support. The goals of this study were to examine the application of self‐determination theory to blood donor motivations and to develop and validate a related multidimensional measure of donor identity. Study Design and Methods Items were developed and administered electronically to a sample of N ew Y ork B lood C enter ( NYBC ) donors (n = 582) and then to a sample of O hio U niversity students (n = 1005). Following initial confirmatory factor analysis ( CFA ) on the NYBC sample to identify key items related to self‐determination theory's six motivational factors, a revised survey was administered to the university sample to reexamine model fit and to assess survey reliability and validity. Results Consistent with self‐determination theory, for both samples CFA s indicated that the best fit to the data was provided by a six‐motivational‐factor model, including amotivation, external regulation, introjected regulation, identified regulation, integrated regulation, and intrinsic regulation. Conclusion The B lood D onor I dentity S urvey provides a psychometrically sound, multidimensional measure of donor motivations (ranging from unmotivated to donate to increasing levels of autonomous motivation to donate) that is suitable for nondonors as well as donors with varying levels of experience. Future research is needed to examine longitudinal changes in donor identity and its relationship to actual donation behavior.