
It seems that hallucinations are far more common in children that was previously thought, and in fact are fairly frequent. In one 2011 study of nearly 8000 children, two-thirds were found to have had at least one psychotic-like experience (PLE) which was more than a simple childhood play fantasy.
Do we have here a simple, and above all natural, explanation for many of the supposed miracles, very often involving young girls, of visions of, in Catholic countries, the Virgin Mary?