How to tell whether a person is lying or telling you the truth?

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SUMMARY

This discussion centers on the effectiveness of lie detection methods, particularly polygraphs and behavioral cues. Participants highlight that while polygraphs can indicate deception, they are not foolproof and can yield false positives due to nervousness. Key signs of lying include eye movement, pupil dilation, and nervous behaviors such as touching the face. The conversation emphasizes that there is no definitive method to determine if someone is lying, as individual reactions vary significantly.

PREREQUISITES
  • Understanding of polygraph technology and its limitations
  • Familiarity with psychological concepts related to deception
  • Knowledge of behavioral cues associated with lying
  • Basic principles of biofeedback and its application in lie detection
NEXT STEPS
  • Research the accuracy and reliability of polygraph tests in forensic psychology
  • Explore behavioral analysis techniques used in detecting deception
  • Investigate the physiological responses associated with lying, such as heart rate and sweat secretion
  • Learn about advanced technologies in lie detection, including facial micro-expressions analysis
USEFUL FOR

This discussion is beneficial for psychologists, law enforcement professionals, and anyone interested in understanding the complexities of human deception and the science behind lie detection.

  • #31
How to tell whether someone is lying or not.

Observe their body movements to tell whether someone is lying or not.

1.hand across the mouth; a quick brush of fingers across the lips
2.restricted movements
3.lip licking
4.nervous cough
5.blushing
6.erratic breathing
7.foot tapping
8.slight fidgeting
9.avoiding eye contact
10.eyes shut
11.flattening tones

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