DEVELOPMENT OF A SOCIAL COMPARISON MEASUREMENT INSTRUMENT FOR SECONDARY SCHOOL STUDENTS
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Abstract
This research aimed to develop an instrument for measuring social comparison among high school students. The research sample consisted of students from secondary schools under the Office of the Secondary Educational Service Area in Bangkok, selected using stratified random sampling. A total of 216 students participated. The results revealed that the social comparison measurement tool comprised 20 items, utilizing a 5-point Multidimensional Within-item rating scale. Each item had an I-CVI value between .75 - 1, and the S-CVI value was .95. The instrument of social comparison consists of two dimensions. The first dimension consists of three components including ability comparison, body image comparison, and lifestyle comparison. The second dimension consists of two components: upward comparison and downward comparison. The omega coefficient for the ability comparison was .86, for the body image comparison was .93, for the lifestyle comparison was .91, for upward comparison .88, and for downward comparison .93. And the examination of construct validity revealed that the social comparison measurement model showed a good fit to the empirical data ( (124, N=198) = 140, p = .14, CFI = .99, TLI = .99, SRMR = .04, RMSEA = .03)
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