Determinants of the Intention in Sustainable Grocery Shopping Among Thai Generation Z: The Role of Perceived Behavioral Control, Personal Attitudes, and Value Perceptions
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This study aims to analyze the perspectives on the sustainability of Generation Z consumers, encompassing perceived environmental knowledge, perceived value, personal attitude, subjective norms, and perceived behavioral control, as factors influencing the intention to purchase sustainable grocery products. Four hundred Thai adults, comprising males, females, and LGBTQA+ individuals of Gen Z aged 20 to 28 years, residing in urban areas of Thailand, have been selected. A significant proportion of respondents resided in the Central region (35.8%), followed by the Northern region (32.0%). Many respondents, totaling 375, have a bachelor's degree, representing 93.8% of the sample. Data reveals that 53.3% (n=213) of respondents are within the age range of 20 to 21 years. Questionnaires were administered to collect data. The regression model exhibited overall statistical significance and explained 58.4% (R²adj = 0.584, F = 112.86, p < 0.001) of the variance in sustainable purchase intention, signifying a strong model fit. Perceived behavioral control (β = 0.331), personal attitude (β = 0.266), and perceived value (β = 0.192) were significant predictors statistically. Respondents clearly indicated that perceived behavioral control, personal attitude, and perceived value influenced customers' purchasing intentions for sustainable grocery products. These observations indicate that businesses should promote sustainable consumption among young Thai consumers by enhancing product accessibility, reinforcing favorable attitudes towards sustainability, and highlighting the benefits associated with sustainable grocery products.
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Adialita, T., Ramadanti, F. A., Vasudevan, A., Mohammad, S. I. S., Nagaraj, S., Raman, A. and Subramaniam, K. (2024). Analysis of factors affecting purchase intention of slow-fashion products by applying the extended theory of planned behavior. Uncertain Supply Chain Management, 12(2024), 2197-2206.
Ajzen, I. (1991). The theory of planned behavior. Organizational Behavior and Human Decision Processes, 50(2), 179–211.
Bain & Company. (2023). Consumers say their environmental concerns are increasing due to extreme weather; study shows they’re willing to change behavior, pay 12% more for sustainable products. Bain & Company. Retrieved January 19, 2025, from https://www.wbcsd.org/news/consumers-say-their-environmental-concerns-are-increasing-due-to-extreme-weather-study-shows-theyre-willing-to-change-behavior-pay-12-more-for-sustainable-products/
Bangkok Post (2020). Thailand's gen Z embraces sustainable practices. Bangkok Post. Retrieved January 19, 2025, from https://www.bangkokpost.com/business/general/1876704/thailands-gen-z-embraces-sustainable-practices
Bangkok Post (2024). Thai gen Z leads asia in strategic shopping. Bangkok Post. Retrieved January 19, 2025, from https://www.bangkokpost.com/business/general/2864878/thai-gen-z-leads-asia-in-strategic-shopping
Barbu, A., Catana, S. A., Deselnicu, D.C., Cioca, L.I., Ioanid, A. (2022). Factors influencing consumer behavior toward green products: A systematic literature review. International Journal of Environmental Research and Public Health, 19(24), 16568, 1-18.
Borah, P. S., Dogbe, C. S. K. and Marwa, N. (2024). Generation Z's green purchase behavior: Do green consumer knowledge, consumer social responsibility, green advertising, and green consumer trust matter for sustainable development?. Business Strategy and the Environment, 33(5), 4530-4546.
Canova, L. and Manganelli, A. M. (2020). Energy-saving behaviours in workplaces: Application of an extended model of the theory of planned behaviour. Europe’s Journal of Psychology, 16(3), 384-400.
Cayaban, C. J. G., Prasetyo, Y. T., Persada, S. F., Borres, R. D., Gumasing, M. J. J. and Nadlifatin, R. (2023). The influence of social media and sustainability advocacy on the purchase intention of Filipino consumers in fast fashion. Sustainability, 15(11), 8502.
Cheng, L., Cui, H., Zhang, Z., Yang, M. and Zhou,Y., (2024). Study on consumers' motivation to buy green food based on meta-analysis. Frontiers in Sustainable Food Systems, 8(2024), 1-21.
Chi, T. and Zheng, Y. (2016). Understanding environmentally friendly apparel consumption: An empirical study of Chinese consumers. International Journal of Sustainable Society, 8(3), 206-227.
Cronin, J. J., Brady, M. K. and Hult, G. T. M. (2000). Assessing the effects of quality, value, and customer satisfaction on consumer behavioral intentions in service environments. Journal of Retailing, 76(2), 193-218.
Dodds, W. B. and Monroe, K. B. (1985). The effect of brand and price information on subjective product evaluations. Advances in Consumer Research, 12(1), 85-90.
Dupont, J., Harms, T. and Fiebelkorn, F. (2022). Acceptance of cultured meat in Germany—Application of an extended theory of planned behaviour. Foods, 11(3), 424.
Dunlap, R. E., & Jones, R. E. (2002). Environmental concerns: Conceptual and measurement issues. In R. E. Dunlap & W. Michelson (Eds.), Handbook of environmental sociology (pp. 483–524). Greenwood Press.
Fenta, Y., Singh, M. and Gautam, R. K. (2024). Antecedents of consumers’ green product purchase intention: An insight from Ethiopia. Cogent Business & Management, 11(1), 2361865.
First Insight. (2020). The state of consumer spending: Gen Z shoppers demand sustainable retail. Retrieved January 19, 2025, from https://www.firstinsight.com/white-papers-posts/gen-z-shoppers-demand-sustainability
Fryxell, G. E. and Lo, C. W. (2003). The influence of environmental knowledge and values on managerial behaviors on behalf of the environment: An empirical examination of managers in China. Journal of Business Ethics, 46, 45–69.
Hasbullah, N. N., Sulaiman, Z., Mas’od, A. and Ahmad Sugiran, H. S. (2022). Drivers of sustainable apparel purchase intention: An empirical study of Malaysian millennial consumers. Sustainability, 14(4), 1945.
Hudayah, S., Ramadhani M. A., Sary, K. A., Raharjo, S. and Yudaruddi, R. (2023). Green perceived value and green product purchase intention of Gen Z consumers: Moderating role of environmental concern. Environmental Economics, 14(2), 87-102.
Jakubowska, D., Abrowska, A. Z., Pachołek, B. and Sady, S. (2024). Behavioral intention to purchase sustainable food: Generation Z’s perspective. Sustainability, 16(17), 7284.
Jordan, B.A., Doshi, V., Malik, A., Noble, S., Frey, S. (2023). Consumers care about sustainability—and back it up with their wallets. Retrieved August 8, 2025, from https://www.mckinsey.com/industries/consumer-packaged-goods/our-insights/consumers-care-about-sustainability-and-back-it-up-with-their-wallets#/
Joshi, Y. and Rahman, Z. (2017). Investigating the determinants of consumers’ sustainable purchase behaviour. Sustainable Production and Consumption, 10(2017). 110-120.
Jung, H. J., Choi, Y. J. and Oh, K. W., (2020). Influencing factors of Chinese consumers’ purchase intention to sustainable apparel products: Exploring consumer “Attitude–Behavioral Intention” gap. Sustainability, 12(5), 1770.
Kufaine, N. (2024) Understanding characteristics of extended theory of planned behaviour: Systematic literature review. Open Journal of Philosophy, 14(4), 848-858.
Kim, N., Lee, K. (2023). Environmental consciousness, purchase intention, and actual purchase behavior of eco-friendly products: The moderating impact of situational context. International Journal of Environmental Research and Public Health, 20(7). 1-17.
Kline, R.B. (2005). Principles and practice of structural equation modelling (2nd ed.). New York: The Guilford Press.
Lei, T. (2023). A study of the influence of consumer perceived value on the purchase intention of new energy vehicle consumers by taking the degree of involvement as the moderating variable. International Journal of Sociologies and Anthropologies Science Reviews, 3(2), 197-208.
Lee, S. (2025). Consumer attitudes and purchase intentions toward Eco-friendly agricultural and food packaging: A case study in Chungnam province, South Korea. Journal of Environmental & Earth Sciences, 7(3), 47–57.
Levrini, G. R. and Jeffman Dos Santos, M. (2021). The influence of price on purchase intentions: Comparative study between cognitive, sensory, and neurophysiological experiments. Behavioral Sciences, 11(2), 1-16.
Li, Y. and Shan, B. (2025). The influence mechanism of green advertising on consumers’ purchase intention for organic foods: the mediating roles of green perceived value and green trust. Frontiers in Sustainable Food Systems, 9, 1-9.
Liu, L. and Liu, J. (2024). Prediction of rear-seat belt use: Application of extended theory of planned behavior. Traffic Injury Prevention, 25(5), 698-704.
Luo, B., Li, L. and Sun, Y. (2022). Understanding the influence of consumers’ perceived value on energy-saving products purchase intention. Frontiers in Psychology, 12, 640376.
Maichum, K., Parichatnon, S. and Peng, K. (2017). The influence of environmental concern and environmental attitude on purchase intention towards green products: A case study of young consumers in Thailand. International Journal of Business Marketing and Management, 2(3), 1-8.
Meena, R., Poondla, M., Nikhade, N. and Krishna, H. (2025). Unveiling the impact of behavioral biases on personality traits and investors sentiments: a smart pls model. Academy of Marketing Studies Journal, 29(4), 1-16.
Meliniasari, A. R. and Mas’od, A. (2024). Understanding factors shaping green cosmetic purchase intentions: Insights from attitudes, norms, and perceived behavioral control. International Journal of Academic Research in Business and Social Sciences, 14(1), 1487–1496.
Moazzam, M., Ahmad, M., Hussain, A. and Akram, M. A. (2023). Examining the factors that shape green purchase behavior: The role of subjective norms, self-efficacy, attitude and intention. Bulletin of Business and Economics (BBE), 12(3), 221-232.
Müller-Pérez, J., Acevedo-Duque, A., García-Salirrosas, E.E., Escobar-Farfan´, N., Esponda-Pérez, J.A., Cachicatari-Vargas, E., ´Alvarez Becerra, R. and Alcina De Fortoul, S. (2025). Factors influencing healthy product consumer behavior: an integrated model of purchase intention. Frontiers in Public Health, 13(1), 1576427.
Nam, C., Dong, H. and Lee, Y. A. (2017). Factors influencing consumers’ purchase intention of green sportswear. Fashion and Textiles, 4(2), 1-17.
Nassanbekova, S., Yeshenkulova, G., Nurguzhina, A. and Ibadildin, N. (2024). Green product purchase intention of young customers from developing country: Extended theory of planned behavior. International Journal of Sustainable Development and Planning, 19(9), 3633-3642.
Nekmahmud, M., Naz, F., Ramkissoon, H. and Fekete-Farkas, M. (2022). Transforming consumers' intention to purchase green products: Role of social media. Technological Forecasting and Social Change, 185, 122067.
NielsenIQ. (2024). Spend Z: Gen Z changes everything. Retrieved January 19, 2025, from https://nielseniq.com/global/en/landing-page/spend-z/
Phan Tan, L. and Le, T. H. (2023). The influence of perceive price and quality of delivery on online repeat purchase intention: The evidence from Vietnamese purchasers. Cogent Business & Management, 10(1), 2173838.
Podsakoff, P. M., MacKenzie, S. B. and Podsakoff, N. P. (2012). Sources of method bias in social science research and recommendations on how to control it. Annual Review of Psychology, 63(1), 539-569.
Podsakoff, P. M., MacKenzie, S. B., Lee, J.-Y. and Podsakoff, N. P. (2003). Common method biases in behavioral research: A critical review of the literature and recommended remedies. Journal of Applied Psychology, 88(5), 879–903.
PR Newswire (2022). The retail market share in Thailand 2021-2025. Retrieved January 19, 2025, from https://www.prnewswire.com/news-releases/retail-market-size-in-thailand-to-grow-by-usd-55-21-billion--by-product-grocery-apparel-and-footwear-bpc-home-and-garden-and-others-and-distribution-channel-offline-and-online--statistics--facts-301505646.html
Rao, A. R. and Monroe, K. B. (1989). The effect of price, brand name, and store name on buyers’ perceptions of products quality: an integrative review. Journal of Marketing Research, 26(August 1989), 351-357.
Sekaran, U. and Bougie, R. (2016). Research methods for business: a skill-building approach (7th ed.). United Kingdom: John Wiley & Sons.
Setyarko, Y. U. G. I., Noermijati, N., Rahayu, M. I. N. T. A. R. T. I. and Sudjatno, S. (2024). The role of consumer green assurance in strengthening the influence of purchase intentions on organic vegetable purchasing behavior: Theory of planned behavior approach. WSEAS Transaction on Business and Economics, 21, 1228–1241.
Shen, X., Xu, Q. and Liu, Q. (2022). Predicting sustainable food consumption across borders based on the theory of planned behavior: A metaanalytic structural equation model. PLoS ONE 17(11), e0275312.
Sriramaneni, S. D., Kotni, V. V. D. P., Babu, G. N. P. V. and Sriramneni, C. (2025). Green purchase intention: Understanding the role of environmental beliefs, health consciousness and perceived behavioural control. Revista Galega de Economía, 34(2).
van Bussel, L.M., Kuijsten, A., Mars, M. and van ‘t Veer, P. (2022). Consumers’ perceptions on food-related sustainability: A systematic review. Journal of Cleaner Production, 341(2022), 130904.
Vermeir, I. and Verbeke, W (2008). Sustainable food consumption among young adults in Belgium: Theory of planned behaviour and the role of confidence and values. Ecological Economics, 64(3), 542-553.
Wang, Y. H. and Chen, L. Y. (2016). An empirical study of the effect of perceived price on purchase intention evidence from low-cost carriers. International Journal of Business and Social Sciences, 7(4), 97-107.
Yahya, W. K., Braun-Scheeff, A.S. and Hashim, N. H. (2022). Young consumers purchase intention of Eco-labelled products: Evidence from Malaysia. International Journal of Academic Research in Business and Social Sciences, 12(1), 1824–1840.
Yue, Y. X. and Nor, N. M. (2024). The relationship between green purchase and purchase intention among Generation Z in Malaysia. Research in Management of Technology and Business, 5(1), 764-780.
Zeithaml, V. A. (1988). Consumer perceptions of price, quality, and value: a means-end model and synthesis of evidence. Journal of Marketing, 52(3), 2-22.
Zhuang, W., Luo, X. and Riaz, M. (2021). On the factors influencing green purchase intention: A Meta-analysis approach. Frontiers in Psychology, 12, 644020.