Communication & PRQuestion 149 of 200
When interpreting body language for signs of deception or aggression, the BSIS curriculum cautions officers to:
a.Treat any single indicator (sweating, lack of eye contact) as proof of deception
b.Rely on cultural stereotypes about who is more likely to lie
c.Use polygraph-style accusatory questioning to confirm suspicions
d.Look for clusters of indicators rather than single signals, and account for cultural and medical factors
Explanation
Modern body-language and deception research — including Paul Ekman's work — emphasizes that single signals (eye contact, fidgeting, sweating) have high false-positive rates and may reflect cultural norms, neurodivergence, anxiety, medical conditions, or simple discomfort with authority. Officers are trained to look for clusters of behaviors, baseline against the individual's normal demeanor, and treat indicators as cues for further inquiry — not proof. Stereotypes (b) violate civil-rights training and lead to bias-based policing. Accusatory questioning (c) damages credibility and may produce false confessions.
Law Reference: BSIS body-language training; Paul Ekman research limitationsPractice all 200 questions free — no signup required.
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