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- A change in the voice's pitch.
- A change in the rate of speech.
- Stalling the conversation by repetitive use of pauses and comments like "um," "ah," or "you know" or throat clearing.
- Turning his body away from you, even if just slightly.
- Suddenly being able to see the white on the top and bottom of a person's eyes, not just the sides.
- Nervous movement of feet or legs.
- Playing with clothing, such as picking lint or smoothing creases.
- Discrepancies between speech and facial or body movements, such as saying "no", but nodding head up and down.
- A liar's pupils may dilate.
- When someone's lying, you're likely to see less smiling.
- More shrugs of the shoulders.
- Excessive blinking could be a giveaway.
- Too much swallowing.
- Rubbing brows.
- Crossed arms or legs.
- Playing with hair.
- A line of perspiration on the brow when it isn't that warm.
- Saying "no" several times in a row instead of just once.