Actually there does not seem to be many cases of children being possessed. That is why I think they are protected by God from such. The child possessions that are seen in movies are not the norm. All of us children played with the Quija board with no effects. It didn’t work very well for us either. But it reacted with speed for our Mom. Back then we were completely ignorant of the spirit world, and did not realize the danger.
Basically, this concept suggests that we can facilitate their manifestation, in a physical and/or spiritual form, firstly through our state of mind & then through choices we make in life, by either thinking, saying & doing good or the opposite, evil.
Since younger children's thoughts are particularly 'pure' (good), it follows that their purity of thought acts as a barrier against evil. IOW, God has provided them with the gift of natural protection. Once we reach maturity & become young adults, then our choices matter in either preserving the gift or polluting it.
On a related yet separate note, on two different occasions, yrs apart, I came face to face with two different people, for the very first time, who strongly repelled me. I have no idea why. There were no suspicious physical signs; they looked quite normal & pleasant. In fact one of them could be described as good looking & well- mannered. Hard to articulate what it was about them that made me feel not only very uncomfortable, but also very wary. Not suggesting they were 'evil', and I've no rational explanation for the way I felt in their presence. It was simply something I genuinely sensed. My brother was with me on one occasion, later when I raised the issue with him, he expressed the same feeling as I.
odds == apologies, I'm off for Holy Week (off to Prague!) starting today. Also, I have no knowledge about demonic possessions beyond movies and have had no experience with this at all.
WVNan -- you are so correct, Christ loved the little innocents, the children.