From what I've gathered, "normal" eye contact is "soft" - that is, not confronting, and most people tend to stare for a few seconds, look away, stare again, repeat. It's the sort of eye contact which signals neither threat [which happens when people stare for too long] nor fear [when people refuse to look at all]. I might be wrong though
Anyways, I'm not great with eye contact. The more I converse with someone, the less likely I am to look at their direction, to the point where I would be looking to the side. I always remind myself that it is seen as polite to look back at someone to signal that you are paying attention, but my gaze usually hovers at their lips or chin.
I think I give the wrong impression that I'm not paying attention at all, when actually I am - I just find it less distracting and confronting when I'm not directly peering at people.
I find this amusing, though - I have no problems staring directly at my dog. In fact, one of the first things I taught my dog was to look at me when saying his name, to make sure he was paying attention.
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Said the apple to the orange,
"Oh, I wanted you to come
Close to me and
Kiss me to the core."
Think you're ASD? Get thee to a professional!