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Hidden Patterns of Nonverbal Behavior Associated with Truth and Deception

Hidden Patterns of Nonverbal Behavior Associated with Truth and Deception. SPSP Data Blitz Dr. Judee Burgoon Jeff Proudfoot David Wilson Ryan Schuetzler. Introduction. Communication tends to be highly patterned Including subtle, perhaps imperceptible patterns

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Hidden Patterns of Nonverbal Behavior Associated with Truth and Deception

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  1. Hidden Patterns of Nonverbal Behavior Associated with Truth and Deception SPSP Data Blitz Dr. JudeeBurgoon Jeff Proudfoot David Wilson Ryan Schuetzler

  2. Introduction • Communication tends to be highly patterned • Including subtle, perhaps imperceptible patterns • Communication patterns are complex • Deception • Much research focused on very brief segments • Ignores patterns among behaviors and dynamic changes • Does deception affect patterning and temporal changes? SPSP

  3. Behavior Pattern Analysis • Bottom-up search of time-coded event data • Identifies behaviors occurring sequentially within a critical, statistically significant time interval • Patterns may be combined to form multi-level, nested patterns (Magnusson 2005, 2006) More information available at www.noldus.com SPSP

  4. Behavior Pattern Analysis SPSP

  5. Behavior Pattern Analysis SPSP

  6. Behavior Pattern Analysis t-pattern SPSP

  7. Sample (Nested) Pattern17 elements, 6 levels, 4 occurrences SPSP

  8. Experiment 1: Mock Theft Method • Participants randomly assigned to “steal” a wallet from a classroom • Both guilty and innocent participants interviewed • Innocent participants told the truth • Guilty participants lied • Video-recorded interviews included baseline and theft-relevant questions • Nonverbal behaviors manually coded with timestamps, submitted to Theme Analysis • e.g., illustrative gestures, adaptor behaviors, etc. SPSP

  9. Mock Theft Results • Truth tellers averaged longer patterns (M = 6.55, SD = 1.95) than did deceivers (M= 5.17, SD = 2.16) • Deceivers repeated patterns (M= 9.48, SD = 2.95) more than truth tellers (M = 7.93, SD = 2.48), i.e., more redundancy • During baseline questions, truth tellers had more patterns (M= 247, SD = 336) than deceivers (M = 98, SD = 395) • During theft questions, truth tellers introduced far more new patterns (M = 23.6, SD= 32.2) than deceivers (M = 3.6, SD= 9.95) SPSP

  10. Experiment 2: Cheating Method • Participants played a trivia game with a partner (confederate) • Randomly induced to cheat (or not) • High-stakes academic consequences if caught cheating • Some refused to cheat and some cheaters confessed • All participants interviewed • Video-recorded interviews included baseline, suspicion and direct accusation questions • Nonverbal behaviors manually coded with timestamps, submitted to Theme Analysis SPSP

  11. Cheating Results • Cheaters had fewer total patterns and fewer unique patterns (due to inactivity, redundancy?) SPSP

  12. Cheating Results--Group Comparisons SPSP

  13. Experiment 3: StrikeComMethod • 3-person groups (N = 14 triads) in a mock military command scenario (search & destroy enemy missile sites) • Completed 5 search turns + 1 strike turn • 1 deceptive, 1 suspicious, and 1 naïve player • Nonverbal behaviors manually coded with timestamps, submitted to Theme Analysis SPSP

  14. StrikeCom Results • Number of unique patterns ranged from 48 to over 1,600 • Deceivers exhibited strategic, manipulative patterning behavior • Suspicious players showed investigatory probing patterning behavior SPSP

  15. StrikeCom Results Means and Standard Deviations of Behaviors and General Pattern Statistics (N = 14) SPSP

  16. Analysis and Results Select Intercorrelations of Session-Level Patterning Behaviors (N = 14) SPSP

  17. Discussion • Deceptive behavior is highly patterned • Pattern analysis reveals many relationships that would otherwise go unnoticed • Tendency of deceiver to initiate patterns with manipulative behaviors • Higher frequency of interaction between deceiver and suspector(excluding the third group member) • Structure of and relatedness among interactive behaviors only available through pattern analysis SPSP

  18. Questions? SPSP

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