Someone also mentioned adopted children. Having worked closely with a child care legal expert, I would say that most adopted children DO have attachment issues, especially when taken as very small children. Adoption is very hard.:
But the attachment issues are more likely due to their experiences with an unavailable or inappropriate birth parent... not the act of adoption itself (although I agree, that does bring with it a number of issues)
Attachment parenting and attachment disorder are not, in my view, particularly related.
In order to avoid attachment disorder, a child needs an available (physically and emotionally) primary care giver throughout the first couple of years of life. It doesn’t have to be a mother. Otherwise every child who was put in a nursery/childminding situation at the nd of maternity leave would have attachment difficulties and that clearly is not the case
Attachment parenting = less scientific fact and I have to agree that this expert is simply trying to keep women in the kitchen as PP said