Reliability and Construct Validity of the Greek Gratitude Questionnaire (GQ6) in a sample of children aged 11 to 12 years
The present study examined the reliability and construct validity of the Greek translation of the Gratitude Questionnaire (GQ-6) in a sample of 1931 elementary school pupils, aged 11 to 12 years. A sub-sample of 59 pupils completed the questionnaire twice with a four-week interval. Forward and back translations were used to translate the GQ from English to Greek. Exploratory factor analysis on the GQ indicated the same single factor as that of the original GQ-6. Internal reliability for two administrations was good (α=0.74 & α=0.60). Test-retest reliability was found to be high (from r=0.62 to r=0.88). The GQ scores were moderately correlated with “satisfaction with life”, revealing that this measure is distinguishable from the measures of “well-being”. Furthermore, an inverse relationship was found between GQ and “anger” as a personality trait in the children sample.