Love and support often characterize families, and they characterize how siblings get along, according to our research (see Adult Sibling Relationships, Columbia University Press). But resentment, miscommunication, and maladaptive family interaction patterns handed down from one generation to the next also characterize some families. History may be prologued. Those patterns are often reified in the present. They live on as family and personal narratives, and they affect and infect future generations.