Modeling the associations among sibling relationship quality, co-rumination, rumination, and depression


Thesis Type: Postgraduate

Institution Of The Thesis: Orta Doğu Teknik Üniversitesi, Faculty of Education, Department of Educational Sciences, Turkey

Approval Date: 2015

Student: BENGÜ CİLALI

Supervisor: ÖZGÜR ERDUR BAKER

Abstract:

The present study was designed to test a model exploring the associations among sibling relationship quality, co-rumination, rumination, and depression. The sample of the current study was composed of 578 Turkish university students. The number of female participants was 336 (58 %) and the number of male participants was 242 (42 %). The age of the participants ranged between 18 and 26 (M= 20.86, Mdn= 21 Mo= 21, SD= 2.11). The Lifespan Sibling Relationship Scale, the Co-Rumination Questionnaire, the Short Version of the Ruminative Response Scale and the Beck Depression Inventory were used to assess the variables of the study. In the current study, structural equation modelling (SEM) was used to test the hypothesized model. The SEM results demonstrated that proposed model provided a good fit to the data despite two non-significant paths. The proposed model was retested by removing these non-significant paths. The trimmed model provided a better fit to the data. According to the results, rumination was found to have a high correlation with depression and a low correlation with sibling relationship quality. Co-rumination was found to have a high correlation with sibling relationship quality and low correlation with rumination. MANOVA analysis revealed that gender had a significant effect on all of the study variables, except for depression.