When we first started Pound Pup Legacy, in November 2006, one of our main objectives was to raise public awareness to the problems adoptees face, in particular, abuse within the adoptive home and family. At first, we could not find much formal documentation addressing "abuse after adoption". According to those who study adoption issues, it's known that abuse in adoptive homes does take place, but very few studies have been dedicated to the subject. Those studies that do pay some attention to abuse post placement contradict one another, or rather, focus on re-abuse of children adopted from the foster care system.
Ironically the movement to protect children from abuse was ignited by the case of Mary Ellen Wilson in 1874. Mary Ellen was an 8-year-old girl from New York City who was severely maltreated by her adoptive parents. Her discovery was much publicized at the time and eventually led to the establishment of the New York Society for the Prevention of Cruelty to Children.
135 years later, child protectors and baby savers seem to have forgotten about the little girl whose story inspired the American child protective movement. Rather than admit flaws in adoptive services exist, many prefer to admit the adopted child who is found severly abused or dead is an "isolated incident" and as grave as the matter is, the public is reminded about the wonders of adoption and how well-off adopted children usually are.
Every abused adopted child is, of course, bad promotion for child placement agencies. The very premise of adoption is that an abused and neglected, "orphaned" child is better off with the adoptive family than with its biological family. Why else consider adoption? So when the opposite ends up to be true, when a child was not abused prior to adoption, but was abused in the adoptive family, that whole premise of "saving a child from trauma and hardship" is being negated.
Abuse in adoptive families is therefore not only a phenomenon that has received little attention, but it is a phenomenon many (working in the placement industry) don't want to see studied, don't want to see explored, and don't want to be be uncovered.