#BrothersAndSisters

The long-standing rivalry between siblings has taken a new turn as recent research shines a spotlight on a surprising “villain” within Thai and global families—the older brother. A large-scale study from the University of Warwick suggests that birth order does matter, with older brothers more likely to become the family aggressors, especially when it comes to bullying their younger siblings. This revelation not only disrupts traditional assumptions about sibling dynamics but also raises important questions about long-term well-being, family culture, and childhood development in Thailand.