Before the 1980s, most adoptions were kept closed. This is because women who go through unexpected pregnancy simply relocate while pregnant, give birth and then return to their homes. The doctor or an agency then looks for an adoptive family for the child without the mother knowing. This kind of setup can bring about a lot of complications and confusion within the adoptive family, particularly on the adopted child.
Choosing between an open and closed adoption depends entirely on the adoptive family's preferences. It's strongly advised that couples that do not entirely support an open adoption should not engage in one. However, it's more rare to find an agency or attorney that is completely comfortable with a closed adoption and will not suggest a semi-open adoption to a birth mother.
Most US states and Canadian provinces have independent non-profit organizations that help adoptees and their birth parents initiate a search, and offers other adoption-related support. There are also independent and state funded reunion registries that facilitate reuniting family members. The International Soundex Reunion Registry (ISRR) is the oldest and largest. The Salvation Army also provides information in helping those who were born or gave birth in its maternity hospitals or homes (see the external links below). This is a change from previous decades, when nothing was ever released without a rarely given or sought court order.
When the birth mother has narrowed down her prospective adoptive parents to one or a few families, normally they arrange to meet in person. Good adoption agencies and attorneys do this in a pressure-free setting where no one is encouraged to make an immediate decision. If they are geographically distant from each other (as some adoptions are interstate, with the birth mother living in a different state from the adoptive parents), the first meeting will normally be by phone, then advance to a face-to-face meeting if the meeting by phone went as well as hoped.
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.