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.
The short answer is, yes. It was once believed that openness in adoption would undermine adoptive parents’ ability to feel entitled to parent their children, that children would be confused about the roles and rights of their adoptive parents in light of contact with their birth parents, that adoptive parents would lose all sense of control or that birth parents would not be able to successfully resolve their grief and loss in reference to their decision to place their child for adoption. What thirty-plus years of open adoption has taught us is that children are not confused about the roles of the people in their lives who love them. Adoption specialists now believe that openness can be a great gift — not just for the children — but for all who are involved in the story of adoption.
Most open adoptions lie somewhere in the middle, according to Grotevant and McRoy, exchanging letters, pictures, and phone calls, and having face-to-face meetings once or twice a year. Whatever their situation, many families report that relatives and friends condemn openness, and voice fears that the arrangement will make the birth parent want the child back.