Basics
Usually the most basic of these relationships studied is that between the mother and child, and second most basic is between sexual partners — the focus of feminism and Queer theory respectively, where relationships are central. Family role theory extends this to study paternalistic, maternalistic and sibling roles, and postulates that one's later relationships are formed largely in order to fill the roles one has grown to find comfortable as part of one's family environment - the family of origin thus setting pattern for the family of choice.
Read more about this topic: Ethical Relationship