The positives of eye contacts are listed well but culture is an issue: some, like myself, are less prone to making direct and lasting eye contacts in Asia than in US, much like I speak better English to an American than to an Asian.
Interestingly, teaching in a classroom brings out my best language performance, US or Asia. This definitely is related to the roles I played. In a private conversation the parties are equal but not in a classroom between teachers and students. This more powerful position imparts confidence on me but there is more: it is easier for me to imagine that every student speaks English as a native speaker. Thus the real issue is that in a less personal situation it is easy to make impersonal assumptions.
Back to the issue here: we should refrain from making constant eye contacts because it seems to make others uncomfortable. Never gaze at people for too long.
It’s been found that the higher the levels of testosterone a fetus is exposed to in utero, the less eye contact they make as infants—across genders. Interestingly, the exception to this rule are male babies who have the very highest levels of T; they end up being as adept at eye contact as their female counterparts—alpha babies aren’t afraid to look you in the eye!
Numerous studies have shown that people who make higher-levels of eye contact with others are perceived as being:
More dominant and powerful
More warm and personable
More attractive and likeable
More qualified, skilled, competent, and valuable
More trustworthy, honest, and sincere
More confident and emotionally stable
Eye contact imparts a sense of intimacy to your exchanges, and leaves the receiver of your gaze feeling more positive about your interaction and connected to you.
Being able to look people in the eye and hold their gaze can help you better network with others, land a job, pitch an idea, make a moving speech, woo the ladies, and intimidate your enemies.