Compara mètodes

	Escala d'Intenció de Compra Verda	Escala de Consum Sostenible
Camp	Psicologia ambiental	Psicologia ambiental
Família	Process / pipeline	Process / pipeline
Any d'origen	1991	2008
Autor original	William B. Dodds, Kent Monroe, Dhruv Grewal	Anna M. Sundström, Iris Vermeir, Wim Verbeke
Tipus	Self-report intention and willingness-to-pay scale	Self-report frequency and behavior scale
Font seminal	Dodds, W. B., Monroe, K. B., & Grewal, D. (1991). Effects of price, brand, and store information on buyers' product evaluations. Journal of Marketing Research, 28(3), 307–319.	Sundström, A. M. (2014). An investigation of the relationship between sustainable values and consumption patterns. In Interdisciplinary book of sustainable development. InTech Press.
Àlies	GPIS, Eco-Friendly Purchase Intention	SCS, Sustainable Lifestyle Scale
Relacionats	3	4
Resum	The Green Purchase Intention Scale (GPIS) measures consumers' stated willingness and likelihood of purchasing environmentally friendly products, including their intention to pay premium prices for eco-labeled goods and their perceived value of sustainable alternatives. Developed from consumer behavior and willingness-to-pay frameworks (Dodds, Monroe, & Grewal, 1991; expanded by Thøgersen and others), the GPIS bridges environmental attitudes and actual purchasing behavior, a critical gap in sustainability research. The scale is widely used in marketing research, environmental policy evaluation, and studies examining whether environmental concern translates into purchasing decisions.	The Sustainable Consumption Scale (SCS) measures the extent to which individuals adopt sustainable and ethical consumption practices across multiple life domains including food, clothing, household products, transportation, and waste. Developed within ecological economics and consumer behavior frameworks (Sundström, 2014; Vermeir & Verbeke, 2008), the SCS captures integrated sustainable lifestyle rather than isolated green behaviors. The scale is widely used in research on sustainable consumption patterns, consumer segmentation for green marketing, and evaluation of sustainability interventions targeting lifestyle transformation.