There's loads of challenges to studying and documenting these cases. You have to:
1. Prove that the child's memories are genuine.
2. Effectively judge the emotional reaction of the children. This is very hard, if not impossible to do if the two families (both of the child and the deceased person) have met already.
3. Historically verify these memories. In countries where archives containing possible records are inaccurate, not well updated or have been destroyed; or in cases older than a century, this is really difficult to do.
4. Ensure the parents aren't spurring on the child.
5. Try and find a way to determine whether this is the same consciousness or just memory transfer to a new conscious brain.
Unfortunately I would classify this more towards fringe science. There is just too many questionable tactics involved to prove these as fact. Fortunately new technologies can help to prove or disprove this phenomenon.
There's loads of challenges to studying and documenting these cases. You have to:
1. Prove that the child's memories are genuine.
2. Effectively judge the emotional reaction of the children. This is very hard, if not impossible to do if the two families (both of the child and the deceased person) have met already.
3. Historically verify these memories. In countries where archives containing possible records are inaccurate, not well updated or have been destroyed; or in cases older than a century, this is really difficult to do.
4. Ensure the parents aren't spurring on the child.
5. Try and find a way to determine whether this is the same consciousness or just memory transfer to a new conscious brain.
Unfortunately I would classify this more towards fringe science. There is just too many questionable tactics involved to prove these as fact. Fortunately new technologies can help to prove or disprove this phenomenon.