While a closed adoption does eliminate any risk of a rocky relationship, it also eliminates the possibility of a fulfilling, positive relationship. Moreover, birth mothers cannot reclaim their children under any circumstance, and adopted children are often less confused about their adoption when they know their birth mothers, who can answer their questions.
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.
When adoptions are closed, the files are usually physically sealed. Nevertheless, most states have created procedures through which family members seeking to "open" a closed adoption may be able to access information about the other parties. However, the process and degree of access to information varies widely from state to state, with some states requiring a court order to reveal information that can be used to identify a party to an adoption.
Open adoption has slowly become more common since research in the 1970s suggested that open adoption was better for children. In 1975 the tide began to change, and by the early 1990s open adoptions were offered by a majority of American adoption agencies. Especially rapid progress was seen in the late 1980s and early 1990s - between 1987 and 1989 a study found only a third of agencies offered fully open adoption as an option; by 1993 76 percent of the surveyed agencies offered fully open adoptions. As of 2013, roughly half of US states consider them legally binding, however contact in open adoption is not always maintained.