๋ฑ๊ฑธ๋ ธ์ด ๋ ๊ฑฐ์ง๋ง ํ์ง LieScope — AI-Powered Truth Detection System
LieScope
Cognitive Stress Detection System · v3.1
Physiological
Heart rate, respiration, skin conductance spike under deceptive load
Cognitive
Fabricating a lie demands more mental resources than recalling truth
Reaction Time
Deceptive responses typically take 200–800ms longer to produce
How It Works
01
Baseline Calibration
Truth-anchored questions establish your natural cognitive response pattern
02
Control Questions
Mild social lie prompts create a reference deception signature
03
Target Probes
Specific single-fact questions isolate stress spikes per dimension
04
Pattern Comparison
Reaction deltas between phases reveal deception probability scores
SESSION INITIALIZING
This interactive psycho-cognitive stress analyzer uses a three-phase question protocol — Baseline → Control → Target — to detect deception patterns through your reaction timing and behavioral consistency. Answer every question with YES or NO as quickly and honestly as you can.
Select a Scenario Topic
Detection Sensitivity
3
⚠️ Educational & Entertainment Purpose Only. This tool simulates polygraph-style questioning methodology for educational purposes. It cannot diagnose truthfulness. Real polygraph accuracy ranges from 70–90% under controlled conditions and is not admissible as sole legal evidence in most jurisdictions.
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TRUTH INDEX
ANALYZING
Processing cognitive stress patterns...
Reaction Time Profile
Per-question response latency (normalized)
Deception Indicators
Full Question Log
Key Findings
Reminder: This analysis is generated algorithmically for educational purposes. Reaction time measurement via browser input has inherent latency variance (±50–200ms). Results should not be used to make real-world judgments about any person's honesty.
The Science Behind Detection
Why "Just Questions" Aren't Enough
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The classic polygraph measures heart rate, respiration, and galvanic skin response. But anxiety ≠ deception. An innocent person can be terrified; a skilled liar may remain calm. This is why a structured comparison question technique (CQT) was developed — pitting control lie responses against target responses to generate a relative delta, not an absolute stress score.
Baseline Questions: Why You Need Them
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Every person has a unique nervous system baseline. Without anchoring to known-true responses ("Is your name ___?", "Did you eat today?"), any stress reading is meaningless. Baseline questions let the system normalize your physiological and cognitive "resting" pattern before introducing ambiguous probes.
Control Questions: The Clever Trick
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Questions like "Have you never told a lie in your life?" are deliberately unanswerable truthfully with "Yes." They create a mild stress reference. If your target question produces a dramatically larger stress spike than this control, the algorithm flags deception. If it's similar or smaller, it reads as more truthful response.
Cognitive Load: The Hidden Layer
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Research shows truth recall is cognitively effortless — you simply retrieve a memory. Constructing a plausible lie requires active fabrication, consistency monitoring, and emotional suppression. This extra cognitive load manifests as measurably longer reaction times (often 200–800ms) and increased error rates when questioned under load conditions like reverse-order narration.
The 5 Rules of Deception-Detecting Questions
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① Single-fact only — "Did you take the money?" not "Did you take and hide it?" Compound questions blur the response signal.
② Yes/No forced — Open-ended answers allow emotional evasion and interrupt the physiological measurement window.
③ Time-Place-Action separation — "Were you there at 9pm?" / "Did you enter the room?" / "Did you open the safe?" breaks alibis three ways.
④ Random order — Predictable question sequences allow anticipatory suppression of stress responses.
⑤ Silent pause enforcement — 3–5 second delays before questions increase physiological response amplitude significantly.
② Yes/No forced — Open-ended answers allow emotional evasion and interrupt the physiological measurement window.
③ Time-Place-Action separation — "Were you there at 9pm?" / "Did you enter the room?" / "Did you open the safe?" breaks alibis three ways.
④ Random order — Predictable question sequences allow anticipatory suppression of stress responses.
⑤ Silent pause enforcement — 3–5 second delays before questions increase physiological response amplitude significantly.
Limitations & Accuracy
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Real polygraph accuracy sits at roughly 70–90% under laboratory conditions — and drops significantly in the field. Countermeasures (biting the tongue, mental arithmetic during baseline questions) can defeat it. High-stakes psychopaths show blunted autonomic responses. Most jurisdictions do not accept polygraph results as primary legal evidence. Next-generation approaches combine fMRI neuroimaging, pupillometry, micro-expression analysis, and voice stress analysis for more robust multi-modal detection.
