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.
Conversely, if they want a confidential adoption, they should not feel unduly pressured into agreeing to an open adoption. Adopters who agree to an open adoption against their wishes may later find it difficult to fulfill their side of the agreement (for example, sending the birthmother letters and photos). This is terribly unfair to both the birthmother and the child. Agreeing to an open adoption when they don't want one is also unfair to the adopters themselves.
Like other, more open adoptions, what a semi-open adoption looks like will vary based on the preferences of the birth parents involved. As prospective adoptive parents, you should prepare to be flexible on communication in a semi-open adoption, as birth parents’ comfort levels (and communication preferences) may change over time as you build a relationship with them.
Closed adoption (also called "confidential" adoption and sometimes "secret" adoption) is a process by which an infant is adopted by another family, and the record of the biological parent(s) is kept sealed. Often, the biological father is not recorded—even on the original birth certificate. An adoption of an older child who already knows his or her biological parent(s) cannot be made closed or secret. This used to be the most traditional and popular type of adoption, peaking in the decades of the post-World War II Baby Scoop Era. It still exists today, but it exists alongside the practice of open adoption. The sealed records effectively prevent the adoptee and the biological parents from finding, or even knowing anything about each other (especially in the days before the Internet). The International Association of Adopted People does not support any form of closed adoption because it believes that closed adoption is detrimental to the psychological wellbeing of the adopted child. However, the emergence of non-profit organizations and private companies to assist individuals with their sealed records has been effective in helping people who want to connect with biological relatives to do so.
In a confidential adoption, neither the adopter nor the birthparents know each other, nor do they ever meet. Instead, all the arrangements and paperwork occur through a middleman, usually an adoption agency or an attorney. Some people call this a closed adoption, although I prefer the terms confidential and traditional because they sound nonjudgmental. A confidential adoption doesn't mean that the adopters and birthparents know nothing about each other. What it means is they have no identifying information about each other.
It’s important to keep in mind that, while adoption relationships can change, it is more complicated to increase contact than to decrease it. If a birth mother starts with an open relationship and then decides later that she needs distance, she can do this at any time. However, if an adoption is closed and a birth mother wants more contact, then she has to come to an agreement with the adoptive family. Therefore, it is especially important that a birth mother choosing closed adoption is sure that it is what she wants.