Chelsy Wee
Sibling relationship is one of the longest-lasting social relationships in a person’s life. However, studies regarding sibling relationships in adulthood are relatively limited. Using the Life Course Theory, a cross-sectional qualitative study was conducted to identify the development of sibling relationship quality (SRQ) across stages of adulthood (young, middle, and older adulthood) and different sibling gender pairings. The study also examined the associations between SRQ and subjective well-being, and the differences in subjective well-being among different sibling gender pairings. A total of 209 Malaysian adults were recruited through social media platforms and were asked to complete two questionnaires, the Lifespan Sibling Relationship Scale, and the Subjective Well-Being — Short Scale. Statistically significant differences were found, in which older adults reported the highest SRQ compared to younger and middle-aged adults. Additionally, a significant positive relationship was found between SRQ and subjective well-being. In terms of sibling gender, same-sex sibling pairings have higher reports of SRQ, and subjective well-being compared to different-sex sibling pairings. These findings suggest that SRQ changes across different adult life stages, and that siblings play an important role in one’s subjective well-being. The findings also underline the importance of sibling gender pairings in determining SRQ and subjective well-being.