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Deception Analysis using Mouse Tracking: Evaluating Truthfulness through Body Movements

Deception analysis has evolved with tools like Mouse Tracking, which reveals truthfulness through body movements. This method, more intricate than polygraphs, economically measures impulses and people's responses. The experiment involves participants responding truthfully or with lies to sets of questions using a mouse. By analyzing the X-Deception Curve, Y-Deception Curve, and Full Deception Curve, deception patterns are identified. However, drawbacks like one-sided questions and potential for faking the test highlight the need for improvements. Suggestions include a better software interface, support from eye-tracking data, more varied questions, and standard desk setups for standard mouse use. Overall, Mouse Tracking offers a precise method for analyzing deception in a cost-effective manner, but there is room for enhancement for more accurate results.

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Deception Analysis using Mouse Tracking: Evaluating Truthfulness through Body Movements

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  1. Deception analysis usingMouse tracking Agrim Gupta

  2. Basics • People hesitate when lying • This shows up in their body movements • Polygraphs measure impulses • Mouse tracking measures the entire flow • This is much difficult to understand than a simple polygraph • Mouse tracking is economical too

  3. The experiment • Two sets of 14-15 ‘obvious’ questions • Participants are made to sit in front of a computer, made to answer with a mouse • One set is truthfully answered, the participant lies in the other one • Participant is not told the objective of the experiment until its done

  4. MouseTracker Designer

  5. MouseTracker Analyzer

  6. Highlights • Questions are randomized • Choice for truth-set or lie-set is random • Individual and Global calibration curve give greater flexibility in analysis • Mouse tracking has better potential of being accurate as people are comfortable with it

  7. X-Deception Curve

  8. Y-Deception Curve

  9. Full Deception Curve (UF)

  10. Full Deception Curve (F)

  11. Drawbacks • One-sided questions – software limitation • Test can be easily faked • Some questions may have doubtful answers • Different people have different mouse movement expertise • Questions need more variety and need to be more in number

  12. Scope for Improvement • A better software that allows more flexibility and is more stable • Additional support from eye-tracking data • Clarity in questions needed • A standard desk with standard mouse support can be arranged for • Questions should have randomized placements of options

  13. Thank You

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