The Gratitude Resentment and Appreciation Test-Revised Short (GRAT-RS): A Multidimensional Item Response Theory Analysis in Italian Workers

Andrea Svicher, Letizia Palazzeschi, Alessio Gori and Annamaria Di Fabio ()
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Andrea Svicher: Department of Education, Languages, Intercultures, Literatures and Psychology, (Psychology Section), University of Florence, 50135 Florence, Italy
Letizia Palazzeschi: Department of Education, Languages, Intercultures, Literatures and Psychology, (Psychology Section), University of Florence, 50135 Florence, Italy
Alessio Gori: Department of Health Sciences (Psychology Section), University of Florence, 50135 Florence, Italy
Annamaria Di Fabio: Department of Education, Languages, Intercultures, Literatures and Psychology, (Psychology Section), University of Florence, 50135 Florence, Italy

IJERPH, 2022, vol. 19, issue 24, 1-10

Abstract: Gratitude is a promising resource from a healthy organizational perspective. It is related to many positive outcomes at work. The Gratitude Resentment and Appreciation Test-Revised Short (GRAT-RS) is the most widely used self-report questionnaire to detect gratitude. The present study examined GRAT-RS (the Italian version) by implementing multidimensional item response theory (MIRT) analyses to explore its psychometric properties. The participants were 537 Italian workers. Confirmatory factor analyses (CFA) of the GRAT-RS and MIRT analyses using the Grade Response Model were run. The MIRT discrimination and MIRT difficulty parameters were calculated. A test information function (TIF) and measure of reliability associated with (TIF) scores were also implemented. CFA highlighted that a bifactor model showed the best fit. Hence, MIRT analyses were carried out by implementing a bifactor model. The MIRT bifactor structure showed a good data fit with discrimination parameters ranging from good to excellent and adequate reliability. The good psychometric properties of GRAT-RS were confirmed, highlighting the questionnaire as a reliable tool to measure gratitude in Italian workers.

Keywords: GRAT-RS; Gratitude Resentment and Appreciation Test-Revised Short; gratitude; multidimensional item response theory; healthy organizations; psychometric properties; strength-based prevention perspectives; workers (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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