This study investigates the psychosocial adjustment of hearing siblings of deaf and hard of hearing (d/hh) children, as well as the quality of the relationships between siblings and between hearing siblings and mothers. Thirty families from Cyprus took part in the study. Self-report data were collected from the mothers and the hearing siblings. Semi-structured interviews examining issues such as peer relationships, relationships with mothers, future aspirations and d/hh child-sibling interactions were also conducted with the hearing siblings. The findings of this study suggest that the hearing siblings of d/hh experience a spectrum of positive feelings within their families, and that their psychosocial adjustment is largely satisfactory. Mothers' rating of their hearing siblings' psychosocial adjustment in this study matched that of themselves; this indicates positive sibling relationships involving fewer emotional and behavioural problems. Most of the hearing siblings did not assume over-responsibilities within the home, and developed satisfactory relationships with their peers. Finally, birth order and family size were key factors in sibling relationships. Information derived from this study is useful for teachers and counselors in their work with d/hh children and their families. Implications to practice and further research are discussed. (Contains 5 tables and 3 figures.)