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Research Article

Validation of the Portuguese version of the Integration of Stressful Life Experiences Scale (ISLES) in a sample of bereaved individuals

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Published online: 10 Apr 2024
 

Abstract

The Integration of Stressful Life Experiences Scale (ISLES) evaluates the ability to integrate stressful experiences into one’s meaning system. The present study developed and validated a version of this scale for a bereaved Portuguese-speaking population, utilizing a sample of 242 adults who had lost a significant other to diverse causes of death. The sample was predominantly female, educated, married, or in consensual unions, and actively employed. Confirmatory factor analysis revealed a two-factor structure, consisting of 13 items, showing adequate local and global goodness-of-fit and supporting the proposed original structure. Convergent evidence based on internal structure was found for the two dimensions (Comprehensibility and Footing in the World). Regarding reliability, Cronbach’s alpha and McDonald’s omega computed for each factor showed good internal consistency and the average inter-item correlation was considered satisfactory. This psychometric support for ISLES underscores its relevance in enhancing the knowledge of meaning-making processes in the Portuguese context.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

Data will be made available upon reasonable request.

Additional information

Funding

This work was funded by Fundação para a Ciência e Tecnologia (FCT), under HEI-Lab R&D Unit (UIDB/05380/2020, https://doi.org/10.54499/UIDB/05380/2020).

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