What is the difference between an “open” and “closed” adoption?

An “open” adoption is one in which there is some level of contact between the adoptive parents and the biological parents both before and following the adoption. The level of contact varies. A typical arrangement might involve sending pictures back and forth or letters on regular intervals, or in some cases, even having visits. Ultimately, it is up to the adoptive parent how much contact will be allowed. In a “closed” adoption, there is no contact between the adoptive and biological families.