Closed adoptions refer to a confidential placement of a child where there is no identifying information provided to the birth family or adoptive family. Although this was historically the most common type of adoption in the U.S., over the past few decades it has become more common for birth and adoptive families to agree on some level of openness in their adoption plan. In closed adoptions, there is no identifying information provided either to birth families or adoptive families. The effects of closed adoption on child and adults who were adopted is well-documented. However, often the effect of a closed placement on birth families is overlooked. There are a number of disadvantages to closed adoptions, many of which can affect birth families.