Abstract
Sibling relationships play a crucial role in shaping an individual's development across various dimensions. From early childhood through adulthood, siblings serve as influential socializing agents, introducing individuals to the intricacies of social norms, values, and behaviors within the family context. Drawing upon a synthesis of empirical research and theoretical perspectives, this review examines the dynamic interplay between siblings and its impact on various domains of human development. During early years siblings often serve as a child's first peer group, influencing language acquisition, social cognition, and emotional regulation. Moving into adolescence, the focus shifts towards the role of siblings in identity formation, autonomy development, and the navigation of peer relationships. Importantly, sibling dynamics contribute significantly to the formation of individual identities as siblings differentiate themselves and develop a sense of self within the family unit. Interactions with siblings also lay the groundwork for effective communication skills, conflict resolution abilities, and the foundation of peer relationships. Beyond these immediate impacts, siblings serve as carriers of familial and cultural influences, contributing to the transmission of values, traditions, and moral beliefs. The enduring nature of sibling connections, extending into adulthood, provides a consistent source of support, fostering a sense of continuity and belonging. Overall, sibling relationships play a multifaceted role in fostering personal growth, resilience, and the development of essential life skills, enriching individuals' experiences throughout their lives.