Does seeing ghosts run in families?

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Not sure if anyone would know, but I've seen ghosts (apparitions), been touched (that was only once when something sat on the end of my bed and then put their hand on my ankle-ish - wasn't threatening, just spooky because there was no one there), heard them (banging things around, like dishes, cupboards, doors, etc, talking, walking up stairs over and over, walking in the hall upstairs), and sensed them (or so it seems - you almost feel as if there's someone staring you down intensely, either behind you or right in your face, and you can almost picture them - it's an odd feeling that just comes out of nowhere sometimes, and it really is intense). Now, most of this occurred at my moms house while I lived there, and my mom is now hearing some stuff now that she's living there alone. She's the sort of person to not pay attention to these sorts of things. For example, she told me recently that she keeps hearing someone walk down the hall upstairs and then she'll hear my old bed creek as if someone had just gotten in to bed, and then tell me it's probably the mice. I told her I didn't want to see whatever kind of mouse was big enough to sound like a person stomping around. Some of the stuff, however, is still happening to me now in the new place. Not all the time, but once in a while. So, my question is, does anyone know if this is hereditary? Or what's the deal here? I have a little one on the way, and I'm hoping they're not going to have to deal with this too as they grow up. You never quite get used to it...