Learn to identify if someone is interested.

Use this knowledge to identify how interested others are in what you are saying or doing. This is especially helpful for those working in sales, as you will now easily be able to identify potential clients.


  1. Learn what dilated pupils mean.
    When your pupils are dilated, it means that you have focused your attention on something and find it interesting; maybe you are looking at an attractive person or even trying to solve a difficult math problem.
  2. Learn what constricted pupils mean.
    When your pupils are constricted, it means you aren’t all that interested in what you are looking at; maybe you are looking at an average-looking person, or the math problem you were trying to solve was too difficult and you have given up.


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