An alternate explanation is that the event never happened, but that a false memory was implanted in the mind of the child. Since this report was prepared, a great deal of research has been done into the implantation of false memories in children's minds through improper but common interview techniques. This is more easily done prior to the age of 6 than after. Many exposes of MVMO hoaxes have concentrated on criticizing defective interview techniques by police or CPS workers. But there is usually a second level of questioning of the children which is done by the parents who are not trained in appropriate interview techniques and are naturally emotionally involved.
Parents often develop a network for sharing of rumours.
Cross-fertilization of stories inevitably happen. Another possibility is that some professionals are not zealous and are well-intentioned, but have been taught to use suggestive methods of interviewing children which are likely to produce false disclosures.