Construction of the Questionnaire of Peace Components in Marital Relationships Based on Islamic Sources

Background and Objectives: This study aimed to develop and validate a questionnaire for assessing components of couples' peace of mind based on Islamic sources.This study aimed to design a valid tool for evaluating relationship quality, spousal interactions, and factors contributing to a peaceful and stress-free family environment. Methods:In the first phase, conceptual components of peace of mind (including moral, spiritual, economic, and sexual aspects) were extracted through library research and document analysis, and initial items were designed.Face validity was confirmed by 11 experts in Islamic psychology and family counseling.In the implementation phase, the questionnaire was completed by 376 married individuals (men and women) residing in Shiraz City, Iran, selected through random sampling.Content validity was assessed using content validity ratio (CVR) and content validity index (CVI) indices, while reliability was measured via cronbach's α (0.85), Spearman-Brown (0.80), and Guttman (0.79) coefficients.Data were analyzed using SPSS software, version 26 and confirmatory factor analysis (CFA) in Amos software.Results: CFA results indicated that the questionnaire structure had a good fit and effectively measured the four main components (moral, spiritual, economic, and sexual).All reliability indicators were at an acceptable level.Notably, sexual peace of mind had the highest mean score, while economic peace of mind had the lowest.All reliability indices were at acceptable levels. Conclusion:The developed questionnaire is a valid, reliable, and practical tool for assessing peace of mind in marital relationships and can be used in family research, marital counseling, and psychological interventions.However, item localization and cultural adaptation are necessary for application in other societies.