i'm like upposite I don't really look people in the eyes, I generally prefern not to. I do it at times but it manly just to seam "polite" as some people gets annoyed if you don't.
Eye contact is pretty wierd, for some cultures/places, its obvious you MUST look people in the eyes and its rude/abnormal not to do that, at other places it can be rude/threatning to look people in the eyes.
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I was raised that I should look people more in the eyes, My mom have commented on me that she been annoyed if I look away and speak to her, also I learn that its "less normal" and seams rude, so for meeting and such things I tend to keep eye contact once in a while.
When I at the buss its opposite. looking at others in the eyes is generally considered rude, and if you catch the glimse of a stranger you or the person will generally look away very fast, yet there is a hook up sign if a stranger can look at each other for 10 min and smile then there interest.
at my old school we also had alot of imigrents from lithuania, and by there culture your never to look people in the eyes or smile to people you dont know. if you smile to a stranger your making a fool out of yourself and if you look at someone then your asking for trouble.
theres really a ton of diffrent ways. I think eyes are very sensetive, the reason I dont like to look people in the eyes is because I mainly feel it to be pretty personal, like i get to know people too well or they get to know me too well. I also dont want to send out the wrong kinds of signals.
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I have no idea where your from or how you look, but maybe you can see around what kind of eye contact people generally do in your area, what types of people you are having in, and ask a couple of people how you look.
I think its more or less imposible to get a usefull answer from the internet on how a person look at another one.