How to Detect Lies M Physical expression will be limited and stiff, with few arm and hand movements. The guilty touches the face, throat, and mouth or behind the ear with his/her hand. M A person who is lying to you will avoid making eye contact. M Gestures/expressions don’t match the verbal statement, such as frowning when saying "I love you". M A guilty person gets defensive. M A liar might unconsciously place objects (book, coffee cup, etc.) between themselves and you. M A liar will use your words to answer a question. When asked, "Did you eat the last cookie?" the liar answers, "No, I did not eat the last cookie." M The guilty person may speak more than natural, adding unnecessary details to convince you; they are not comfortable with silence or pauses in the conversation. M A liar may leave out pronouns and speak in a monotonous tone. When a truthful statement is made the pronoun is emphasized. M Words may be garbled and spoken softly, and syntax and grammar may be off. In other words, his sentences will most likely be muddled rather than emphasized. M If you believe someone is lying, change subject of a conversation quickly, a liar follows along willingly and becomes more relaxed. The guilty wants the subject changed.