In episode 3, Sarah and Rachel dive into what it means to them to be sisters, including details about being the oldest versus the youngest in a sibling relationship. They reflect on fun stories and the positive aspects of sibling bonds. They also tie in research to learn more about how sibling relationships are affected by transitions throughout young adulthood.
Article: Conger K, Little W. Sibling relationships during the transition to adulthood. Child Development Perspectives. 2010;4:87–94.