Most open adoptions lie somewhere in the middle, according to Grotevant and McRoy, exchanging letters, pictures, and phone calls, and having face-to-face meetings once or twice a year. Whatever their situation, many families report that relatives and friends condemn openness, and voice fears that the arrangement will make the birth parent want the child back.
Like any relationship, open adoption relationships evolve over time. Post-adoption contact may increase or decrease, or the nature of the contact may change along with people’s changing lives. However, even in the most open adoption relationship, the birth parent is not a co-parent but rather another very important person in the child’s life. The child’s adoptive parent(s) are his or her legal parent(s) and they have all rights and responsibility for the child. Most importantly, when birth parents and adoptive parents set out to forge their relationship, the child’s needs must always be paramount.
Oftentimes the birth and adoptive parents will sign a Post-Adoption Contract (sometimes called an Open Adoption Agreement), putting in writing any promises regarding contact after the adoption is finalized. Even in those states which do not expressly have laws in this area, these agreements can usually be prepared if the parties desire to formalize the agreement. In an increasing number of US states, courts will find these agreements legally enforceable, as long as they serve the best interests of the child. It is not unusual for these agreements to be more like "handshake" agreements, although they offer less protection to a birth parent if the adoptive parent's promises were not honored.
Closed adoptions are rare in the United States, but remain common in international adoptions and were the norm in adoptions in the past, when families usually used an agency to adopt a newborn. The prospective adoptive family would put their name on a list, and wait for the social worker to make a match. The adoptive parents didn't know where the child came from, or who his or her birthparents were. The child might not have even known that he or she came into the family through adoption.
Open adoption is a form of adoption in which the biological and adoptive families have access to varying degrees of each other's personal information and have an option of contact. While open adoption is a relatively new phenomenon in the west, it has been a traditional practice in many Asian societies, especially in South Asia, for many centuries. In Hindu society, for example, it is relatively common for a childless couple to adopt the second or later son of the husband's brother when the childless couple has limited hope of producing their own child.