A practice in which an adult assumes the role of parent for a child who is not his or her biological offspring.

An adult assumes the role of parent for a child other than his or her own biological offspring in the process of adoption. Informal adoptions occur when a relative or stepparent assumes permanent parental responsibilities without court involvement. However, legally recognized adoptions require a court or other government agency to award permanent custody of a child (or, occasionally, an older individual) to adoptive parents. Specific requirements for adoption vary among states and countries. Adoptions can be privately arranged through individuals or agencies, or arranged through a public agency such as a state's child protective services. Adoptees may be infants or older children; they may be adopted singly or as sibling groups; and they may come from the local area or from other countries. Adoptive parents may...