Shahid Beheshti University Applied Psychology 2008-4331 19 3 2025 08 23 Designing and Testing the effects of Organizational Basic Psychological Needs on Work effort with mediating of Organizational Attachment Styles Designing and Testing the effects of Organizational Basic Psychological Needs on Work effort with mediating of Organizational Attachment Styles 167 186 106109 10.48308/apsy.2025.238370.1759 FA AbdulZahra Naami Professor, Department of Psychology, Shahid Chamran University of Ahvaz, Ahvaz, Iran 0000-0002-4378-2650 Moloud Hendiani Ph.D Candidante in Industrial and Organizational Psychology, Shahid Chamran University of Ahvaz, Ahvaz, Iran. 0000-0002-1996-9116 Journal Article 2025 01 16 Aim: This study aimed to design and test a model examining the effects of organizational basic psychological needs on work effort, mediated by secure, anxious, and avoidant organizational attachment styles. Method: This applied, descriptive study included 200 employees from a water and wastewater company in Ahvaz, selected via simple random sampling. Participants completed measures of organizational attachment styles, basic psychological needs satisfaction, and work effort. Structural equation modeling was conducted using AMOS-24 with bootstrap analysis. Results: The proposed model demonstrated good fit (p < 0.001). Direct effects of organizational basic psychological needs on attachment styles and work effort were significant, as were indirect effects mediated by attachment styles. Conclusion: Organizational attachment styles significantly mediate the relationship between basic psychological needs satisfaction and work effort. Aim: This study aimed to design and test a model examining the effects of organizational basic psychological needs on work effort, mediated by secure, anxious, and avoidant organizational attachment styles. Method: This applied, descriptive study included 200 employees from a water and wastewater company in Ahvaz, selected via simple random sampling. Participants completed measures of organizational attachment styles, basic psychological needs satisfaction, and work effort. Structural equation modeling was conducted using AMOS-24 with bootstrap analysis. Results: The proposed model demonstrated good fit (p < 0.001). Direct effects of organizational basic psychological needs on attachment styles and work effort were significant, as were indirect effects mediated by attachment styles. Conclusion: Organizational attachment styles significantly mediate the relationship between basic psychological needs satisfaction and work effort.

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