Murder of Kids With Attachment Disorders

This is another category of kid who are often murdered by caregivers. Reactive Attachment Disorder (RAD) is caused by a) living in an environment unsuitable for attachment, such as with an emotionally neglectful parent, and/or b) losing a primary caregiver, such as with foster or older adopted kids. These kids have serious difficulty trusting others because they either lost or never developed the basic expectation that their parent will always be there and help them. As a result, they can have serious behavioral problems and often don't give parents the same kind of 'rewards', such as expressing love and trust. Some parents end up killing these kids. Here's some news stories about this:
http://www.newsweek.com/id/74385/page/1
http://www.ratbags.com/rsoles/comment/candace.htm (this one about an abusive therapy)
http://www.salon.com/sept97/mothers/renee970930.html