Psychometric properties of the Portuguese Environmental Attitudes Inventory / Propiedades psicométricas del Inventario Portugués de Actitudes Ambientales

Abstract

This paper aimed to assess the structural validity of the Portuguese version (EAI-PT) of the Environmental Attitudes Inventory using exploratory (EFA) and confirmatory factor analysis (CFA). EFA showed that all 12 EAI-PT scales have adequate reliabilities. Ten scales loaded heavily on one higher-order factor, whilst scales 5 (confidence in science and technology) and 12 (support for population growth policies) loaded on a different factor; moreover, these scales did not correlate with any other scale, indicating that they are not related to environmental attitudes in the Portuguese population. The removal of these two scales and five items from other scales is suggested, resulting in an EAI-PT version with 95 items and 10 scales. CFA confirmed that a vertical structure of EA with either two second-order factors that reflect the dilemma between Preservation and Utilization or one second-order factor that expresses a bipolar view of environmental attitudes are equally adequate.