A Validation Study of the Posthumous Organ Donation Reasoned Action Scale

Abstract

The posthumous organ donation reasoned action scale (PODRAS) may be the first multidimensional scale measuring individuals’ perceptions, which is developed based on the Theory of Reasoned Action and guided by empirical data. This study moves further to validate the scale and examine its psychometric properties. Two hundred and twenty-one university students participated in the study. Results suggested that the scale has a structure with six dimensions: Mutilation and Imperfectness, Legacy for Family, Altruism, Detachment, Eradication of Hope, and Burden on Family. The scale was evaluated with acceptable to good psychometric properties and model fit (χ2/df = 1.58; root mean square error of approximation = .07; standardized root mean square residual = .08; comparative fit index = .92; incremental fit index = .92; Tucker–Lewis index = .90). Construct validity was also supported. The study has significant contributions that theoretically, the scale proposed a conceptualization framework in understanding posthumous organ donation, whereas methodologically, the scale serves as a tool that facilitates future studies of organ donation behaviors.