The aim of this study is to examine the sibling relationships of individuals in adolescence, young adulthood and mid adulthood in terms of various variables and to conduct an in-depth research on sibling relationships. For this reason, both qualitative and quantitative models were used and mixed method was used in the research. The pattern of the research is Asynchronous Mixed Model. The sample of the study is for students attending secondary school and high school between the ages of 12-18 for adolescence; university students aged 19-35 and parents of high school and secondary school students for young adulthood; For middle adulthood, it consists of volunteers who attend high school, middle school and university, among the 36-60 year old parents. In conclusion, although participant descriptions about sibling relations varied based on the age group, the existence and significance of sibling relations remained meaningful. In later studies, it can be studied with different age groups in addition to adolescence, young and middle adulthood. This is a cross-sectional study, with a longitudinal and more comprehensive study, and sibling relationships can be addressed.
Key Words: Sibling relationships, attachment, well-being, loneliness