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This study aimed to construct a consumer cosmetic consumption safety behavior scale for high school students. The sample group for trying out the scale were 100 high school students selected by simple random sampling. The sample group for Confirmatory Factor Analysis were 500 high school students in Bangkok Metropolitan Region selected by multi-stage sampling. The analyses performed through the content and construct validity, reliability and discrimination power.
A questionnaire was applied including a 29-item behavior scale. Questions were organized around four subdomains, namely: 1) reading the label (8 items), 2) using product claims on the label (9 items), 3) checking cosmetic advertising media (3items), and 4) observing adverse effects of cosmetics (9 items). The results revealed that the index of item-objective congruence (IOC) was between 0.60 – 1.00 with our excellent internal consistency (Cronbach alpha = 0.94). The discrimination power of item on the basis of t-test ranged from 3.93 to 9.56 (p<0.05). The Confirmatory Factor Analysis showed that the model was consistent with empirical data (2= 2.419, df = 1, p = 0.119, CFI = 0.996, TLI = 0.973, RMSEA = 0.053, SRMR = 0.012). Therefore, other researchers are encouraged to use or adapt this scale for their specific needs.
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