Vanessa Van Edwards explains how listeners detect lies in your voice within 200 milliseconds. Liars often slip into question inflection because they rehearse words but not delivery. Speaking your first ten words in a low, non-questioning tone prevents listeners from scrutinizing you.
Liars accidentally use the question inflection. Research has found that someone decides how confident we are within 200 milliseconds of hearing someone speak. I always make sure that my first 10 words, I say them in the lowest natural tone that I have without a question inflection, because liars often practice the verbal content but they don't practice the vocal content. And so they ask their life with their voice. And so we know this, that they've even found that when we hear an accidental question inflection, it changes how we listen. We go from listening to scrutinizing. If you ask your numbers, if you ask name, if you ask for important information, you are begging people to negotiate with you.
