01967nas a2200133 4500008004100000245008000041210006900121260005500190520145700245653002001702653002101722100001901743856007101762 2017 eng d00aConstruction of Gratitude Scale Using Polytomous Item Response Theory Model0 aConstruction of Gratitude Scale Using Polytomous Item Response T aNiigata, JapanbNiigata Seiryo Universityc08/20173 a

Various studies have shown that gratitude is essential to increase the happiness and quality of life of every individual. Unfortunately, research on gratitude still received little attention, and there is no standardized measurement for it. Gratitude measurement scale was developed overseas, and has not adapted to the Indonesian culture context. Moreover, the scale development is generally performed with classical theory approach, which has some drawbacks. This research will develop a gratitude scale using polytomous Item Response Theory model (IRT) by applying the Partial Credit Model (PCM).

The pilot study results showed that the gratitude scale (with 44 items) is a reliable measure (α = 0.944) and valid (meet both convergent and discriminant validity requirements). The pilot study results also showed that the gratitude scale satisfies unidimensionality assumptions.

The test results using the PCM model showed that the gratitude scale had a fit model. Of 44 items, there was one item that does not fit, so it was eliminated. Second test results for the remaining 43 items showed that they fit the model, and all items were fit to measure gratitude. Analysis using Differential Item Functioning (DIF) showed four items have a response bias based on gender. Thus, there are 39 items remaining in the scale.

Session Video 

10aGratitude Scale10apolytomous items1 aArbiyah, Nurul uhttps://drive.google.com/open?id=1pHhO4cq2-wh24ht3nBAoXNHv7234_mjH