Reliability and validity of the Greek version of the Short Gratitude Resentment and Appreciation Test (S-GRAT-GR)

Abstract

Gratitude is a psychological notion that has been associated with numerous beneficial outcomes for individuals and communities. The Short Gratitude Resentment and Appreciation Test (S-GRAT), one of the most widely used measure to detect trait gratitude, comprises three subscales that assess lack of a sense of deprivation, appreciation for simple pleasures, and appreciation of others. The present study tested the psychometric properties of the Greek version of the S-GRAT scale. Using a sample of 681 adults from the general population and a smaller separate sample of fifty individuals we found that the scale demonstrated good internal consistency and high test-retest reliability. Explanatory and confirmatory factor analyses confirmed the original three-dimensional scale structure. Convergent and discriminant validity tests found S-GRAT-Gr total score was significantly correlated with Agreeableness, Intellect, Extraversion, Emotional Stability and Conscientiousness. S-GRAT-Gr also had positive correlations with the Gratitude Questionnaire (GQ-6), the Subjective Happiness Scale and the Satisfaction With Life Scale. S-GRAT-Gr score was found to have a unique impact on Life Satisfaction and Happiness beyond the basic taxonomies of personality and also beyond the GQ-6. Results indicate that the Greek version of the Revised Short Gratitude, Resentment, and Appreciation Test (S-GRAT-Gr) is a reliable and valid instrument for assessing dispositional gratitude in the Greek context.