PSYCHOMETRIC STUDY OF THE TURKISH SURVEY OF PERCEIVED ORGANIZATIONAL SUPPORT (SPOS)

Authors : Özlü DOLMA, Ayşe Alev TORUN

Pages : 271-295

View : 19 | Download : 5

Publication Date : 2017-09-01

Article Type : Research Paper

Abstract :In this study, the psychometric properties of the “Survey of Perceived Organizational Support” insert ignore into journalissuearticles values(SPOS); developed by Eisenberger et al. insert ignore into journalissuearticles values(1986); are investigated to provide further empirical evidence on its reliability and validity. In Study I, the effects of using different number of response options insert ignore into journalissuearticles values(5-point vs. 6-point Likert scales); and different anchoring labels insert ignore into journalissuearticles values(fully-labeled vs. end-anchored response scale); on participants’ responses to SPOS items are investigated. Results showed that the anchoring labels and the number of response categories did not have a dramatic impact on the participants’ responses to SPOS items. Alpha coefficients were very high for all of the four different scale designs of SPOS, but the fully-labeled, 6-point Likert scale had the highest reliability coefficient. Exploratory factor analyses insert ignore into journalissuearticles values(EFA); findings provided support for the unidimensionality of SPOS. In Study II, the test-retest reliability of the 16-item version of SPOS was examined. Results provided evidence of high test-retest reliability. 
Keywords : Survey of Perceived Organizational Support, Psychometric Evaluation, Reliability, Validity, Scale Design, Number of Response Categories, Likert type Rating Scales