Contribution to an Ecological Worldview: Adaptation and validation of the New Ecological Paradigm Scale to the European Portuguese language
European Review of Applied Psychology, ISSN: 1162-9088, Vol: 75, Issue: 1, Page: 100964
2025
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Article Description
The growing need for societies to adopt a more ecological and sustainable mindset highlights the importance of instruments such as the 15-item New Ecological Paradigm Scale (NEP Scale). The scale measures the individuals’ endorsement of an ecological worldview, contrasting with the perspective of human dominance and exemptionalism. This study aimed to validate the European Portuguese version of the NEP Scale using a cross-validation approach. The total sample, consisting of 511 participants (56.4% women; aged between 18-73 years old), was split into two halves, with the first half used to perform an exploratory factor analysis (EFA) to refine the scale, and the second half to perform a confirmatory factor analysis (CFA). The EFA revealed a 14- item two-factor latent structure, which was subsequently confirmed through CFA (CFI = 0.98; TLI = 0.97; RMSEA = 0.04; SRMR = 0.06). Internal consistency was assessed using Cronbach's alpha (α) and McDonald's omega (ωs), with factor 1 (Ecocentrism; α =.88; ωs =.87), and factor 2 (Anthropocentrism; α =.80; ωs =.81) showing strong internal consistency. Significant moderate correlations between both NEP Scale dimensions and the Ecologically Conscious Consumer Behavior (ECCB) scale (r1 =.383; r2 =.313) provided convergent evidence for construct validity. The correlation between NEP dimensions was.70, indicating an acceptable discriminant validity. This study adds to the evidence of the European Portuguese version of NEP being a valid, reliable, and valuable tool for assessing environmental orientation within Portuguese speaking samples. Moreover, average NEP scores showed that the Portuguese are akin to a pro-ecological worldview (M = 3.72, SD = 0.68), specially among young women with low income. La nécessité croissante pour les sociétés d’adopter un état d’esprit plus écologique et durable souligne l’importance d’instruments tels que l’échelle du nouveau paradigme écologique (échelle NEP), qui comporte 15 questions. Cette échelle mesure l’adhésion des individus à une vision écologique du monde, qui contraste avec la perspective de la domination humaine et de l’exemption. Cette étude visait à valider la version portugaise européenne de l’échelle NEP à l’aide d’une approche de validation croisée. L’échantillon total, composé de 511 participants (56,4 % de femmes, âgées de 18 à 73 ans), a été divisé en deux moitiés, la première servant à effectuer une analyse Powered by Editorial Manager® and ProduXion Manager® from Aries Systems Corporation factorielle exploratoire (AFE) pour affiner l’échelle, et la seconde à effectuer une analyse factorielle confirmatoire (AFC). L’EFA a révélé une structure latente à deux facteurs de 14 éléments, qui a ensuite été confirmée par l’AFC (CFI = 0,98 ; TLI = 0,97 ; RMSEA = 0,04 ; SRMR = 0,06). La cohérence interne a été évaluée à l’aide de l’alpha de Cronbach (α) et de l’oméga de McDonald (ωs), le facteur 1 (écocentrisme ; α = 0,88 ; ωs = 0,87) et le facteur 2 (anthropocentrisme ; α = 0,80 ; ωs = 0,81) présentant une forte cohérence interne. Des corrélations modérées significatives entre les deux dimensions de l’échelle NEP et l’échelle ECCB (r1 =.383 ; r2 =.313) ont fourni des preuves convergentes de la validité de la construction. La corrélation entre les dimensions du PEN était de 0,70, ce qui indique une validité discriminante acceptable. Cette étude ajoute à la preuve que la version portugaise européenne du NEP est un outil valide, fiable et précieux pour évaluer l’orientation environnementale au sein d’échantillons lusophones. En outre, les scores moyens au NEP ont montré que les Portugais ont une vision du monde pro-écologique (M = 3,72, SD = 0,68), en particulier chez les jeunes femmes à faible revenu.
Bibliographic Details
Elsevier BV
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