There might be an natural explanation to it.
Many times when we humans start to believe in something, then each time we get confirmation in our belief (cry) then our mind notice it and says...yes they do cry from me, but each time the kid laugh or are calm, the brain give no confirmation that your belief are wrong, because you don't bother to put it up against your belief.
Many years back, when I was about to buy a new car, which I found very nice, I started to notice that there was a lot of this type, even if that was not true, but it was because each time i spotted it, then my brain put it up against my belief.
A little while after I had got my car, there was suddenly not so many to see..........but that was maybe because my brain was not that occupied to spot for them
