https://ojs.aeducia.org/index.php/jgmds <div style="max-width: 1000px; margin: 10px auto; padding: 12px 16px; background-color: #ffffff; border: 1px solid #ddd; border-radius: 6px; font-family: arial, sans-serif; font-size: 14.5px; line-height: 1.6; color: #333; text-align: justify;"> <div><strong><span style="color: #b21818;">Journal of Gender and Millennium Development Studies (JGMDS)</span></strong> is an open-access journal published periodically to provide a platform for researchers, scholars, professionals, practitioners, lecturers, gender studies experts, development studies specialists, and university students to share and promote state-of-the-art research findings in the field of gender and millennium development studies. The journal aims to disseminate knowledge and research findings to the scientific community and the public, serve as a reliable reference source, build a knowledge base, offer a platform for researchers to engage in discussions and collaborations, and contribute to the advancement of the field of gender and millennium development studies.</div> </div> Academia Edu Cendekia Indonesia (AEDUCIA) en-US Journal of Gender and Millennium Development Studies 3063-3842 <p>Authors who publish with this journal agree to the following terms: <strong>(1)</strong> Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a<a href="https://creativecommons.org/licenses/by-sa/4.0/" target="_blank" rel="noopener"> Creative Commons Attribution-ShareAlike 4.0 International.</a> that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal; <strong>(2)</strong> Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal; <strong>(3)</strong> Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.</p> https://ojs.aeducia.org/index.php/jgmds/article/view/483 <p><strong>Background:</strong> Infidelity represents a severe relational stressor that may trigger Post-Infidelity Stress Disorder (PISD) and increase the risk of intimate partner violence (IPV), yet empirical evidence within the Nigerian context remains limited.</p> <p><strong>Objective:</strong> This study examined the predictive relationship between PISD and IPV and assessed the moderating role of coping strategies, while exploring differences across gender and age groups. <strong>Method:</strong> A quantitative cross-sectional design was employed. Data were collected from intimate partners using standardized instruments measuring post-infidelity stress, coping strategies, and IPV. Multiple regression and moderation analyses were conducted to determine predictive effects and interaction patterns. <strong>Result:</strong> PISD significantly predicted IPV, accounting for 38% of the variance in violent behaviour. Individuals with elevated PISD were 3.14 times more likely to engage in IPV. Females reported higher PISD levels, whereas younger adults demonstrated greater vulnerability to IPV and maladaptive coping. Adaptive coping strategies significantly reduced the strength of the PISD–IPV association. <strong>Conclusion:</strong> Post-infidelity stress constitutes a substantial psychological risk factor for intimate partner violence. The interaction between stress responses and coping styles plays a critical role in shaping behavioural outcomes within intimate relationships. <strong>Contribution:</strong> The findings provide empirical evidence to inform culturally responsive counseling and violence-prevention interventions in Nigeria.</p> Edafe Ulo Annmarie Nkem Okoli Copyright (c) 2026 Edafe Ulo, Annmarie Nkem Okoli https://creativecommons.org/licenses/by-sa/4.0 2026-03-09 2026-03-09 3 1 1 10 10.64420/jgmds.v3i1.483