Make eye talk when talking and listening. It will give the other person a sense that you care, that they matter. If you fail to look someone in the eye as you converse, the other party will feel that his position or opinion is unimportant to you. Making eye contact is so powerful that even manufacturers employ this tool in their packaging. Researchers found that consumers are more likely of an image of a person looking straight at them, than at a product with a person looking to the side, or no person at all.
And it has been discovered that when children and adults are completely denied eye contact , they develop depression and anti social traits.
Ei explained book