This document defines family and discusses different types of families. It begins by defining family from various scholars' perspectives. It then discusses the characteristics of family, including the roles of marriage and procreation. The document categorizes families based on organization (nuclear vs extended), marriage structure (monogamous vs polygamous), descent (patrilineal vs matrilineal), and residence (patrilocal vs matrilocal). It also discusses adoptive, childless, and blended families. The functions of family are then outlined, including meeting basic needs, providing a support system, and facilitating child rearing. The document concludes by discussing systems theory and Bowen's family systems theory, focusing on concepts like differentiation of self