For speaking, negotiating, communicating, and leading:
Only actual eye contact fully activates those parts of the brain that allow us to more acutely and accurately process another person’s feelings and intentions. Think of it as a cognitive jump-start that occurs whenever you lock eyes with another person, whether in front of you or across a crowded room. …
“A richer mode of communication is possible right after making eye contact,” Dr. Senju said. “It amplifies your ability to compute all the signals so you are able to read the other person’s brain.”
In other words, eye contact makes us more socially aware and empathetic. It allows us to make sense of our relationships and social orientation. So avoiding eye contact out of fear or insecurity, or breaking eye contact to read a text, check email or play Candy Crush degrades your social facility and emotional intelligence.