57 , 2018-02-28 , Division of Physhology, Faculty of Human Sciences, University of Tsukuba , 筑波大学人間系心理学域
This study aims to develop a new implicit measurement of trait gratitude using the Implicit Association Test (IAT), and to test its validity and reliability. Thirty-eight college students visited the laboratory twice within a 3-7 day interval (M = 4.55, SD = 2.33). On both occasions, they undertook the Gratitude IAT and completed self-ratings for trait gratitude, gratitude behavior, self-esteem and empathy. The results revealed a relatively high correlation between the two occasions of .63 (p < .001). Furthermore, the D-scores for the gratitude IAT each time were statistically higher than 0, which indicates that gratitude is more strongly associated with self-related words than other-related words. However, no significant correlations were observed between the self-rating scales and the D-scores. Given that implicit and explicit measurements of gratitude may reflect different aspects of gratitude, it is necessary to examine the validity of the Gratitude IAT, as well as considering other methods, such as behavior observation and other-rated measurements.