Methoden vergelijken

	New Ecological Paradigm Scale	Environmental Identity Scale
Vakgebied	Omgevingspsychologie	Omgevingspsychologie
Familie	Process / pipeline	Process / pipeline
Jaar van ontstaan	2000	2003
Grondlegger	Riley E. Dunlap	Susan D. Clayton
Type	Self-report Likert scale	Self-report identity and self-concept scale
Oorspronkelijke bron	Dunlap, R. E., Van Liere, K. D., Mertig, A. G., & Jones, R. E. (2000). New trends in measuring environmental attitudes: measuring endorsement of the New Ecological Paradigm (NEP). Journal of Social Issues, 56(3), 425–442.	Clayton, S. D. (2003). Environmental identity: A conceptual and an operational definition. In S. D. Clayton & S. Opotow (Eds.), Identity and the natural environment: The psychological significance of nature (pp. 45–65). MIT Press.
Aliassen	NEP, New Environmental Paradigm Scale	EIS, Ecological Identity Scale
Verwant	3	4
Samenvatting	The New Ecological Paradigm (NEP) Scale measures endorsement of an ecocentric worldview that views humans as embedded within, rather than dominant over, nature. Developed by Dunlap et al. (2000) to update the original 1978 scale, the NEP assesses environmental beliefs across multiple dimensions including balance of nature, limits to growth, human exceptionalism, and nature's intrinsic value. It is widely used in environmental psychology, sustainability research, and conservation communication studies.	The Environmental Identity Scale (EIS) measures the degree to which individuals incorporate environmental values and ecological concerns into their sense of self—how central environmental stewardship is to personal identity and self-concept. Developed by Clayton (2003) from identity theory and social psychology, the EIS captures environmental identity as a psychological construct distinct from attitudes, values, or behaviors alone. High EIS scores indicate that individuals view themselves as 'environmental people' for whom conservation and sustainability are integral to who they are. The scale is foundational for research on sustainable behavior motivation, examining why environmental values persist and translate into behavior for some individuals but not others, and evaluating whether environmental interventions shift identity and thus self-motivated behavior change.