RT Journal Article A1 Fatullah Razi T1 Environmental concern as a green stimulus: An S-O-R approach to sustainable fashion purchase intention in Indonesia JF Priviet Social Sciences Journal YR 2026 VO 6 IS 2 SP 366-374 DO 10.55942/pssj.v6i2.1315 AB Despite the increasing global awareness, sustainable fashion consumption remains inconsistent. This study applies the stimulus-organism-response (S-O-R) model to examine the process through which environmental concern acts as a green stimulus influencing consumers’ internal psychological activation and purchase intention. Using data from Indonesian consumers analyzed through structural equation Modeling based on Partial Least Squares (PLS-SEM), incorporating 5,000 bootstrap resamples, the findings indicate that environmental concern has a statistically significant positive effect on purchase intention (β = 0.738; t = 18.756; p < 0.001; R² = 0.545; f² = 1.196; SRMR = 0.067). All reliability and validity criteria were met (α > 0.80, CR > 0.85, and AVE > 0.56). The findings confirm that environmental concerns function as psychological and emotional stimuli that shape sustainable purchase behavior. This study broadens the application of the S-O-R framework in sustainability research and offers practical guidance for eco-fashion marketers to design emotionally engaging green messages targeting emerging market consumers. K1 Stimulus-Organism-Response, Environmental Concern, Sustainable Fashion, Purchase Intention, PLS-SEM, Indonesia LK https://journal.privietlab.org/index.php/PSSJ/article/view/1315 ER