Movement
Visual Access Theory holds that eye movement can betray whether the disclosure was retrieved from memory or created.
Visual Access Theory holds that eye movement can betray whether the disclosure was retrieved from memory or created.
Blinking
Blink rates can indicate escalated anxiety or controlled contempt and a range of emotions in between. Normal blink rates range from two to ten times a minute depending on relative humidity and eye center. Blink rates decrease when the eye is engaged in reading or watching a screen, down to 3 to 4 times a minute.
A blink rate baseline can be derived by counting blinks per minute at resting or unescalated levels. More accurate blinks rates are determined over a period of time, averaging blink rates from at least a half dozen samples.
Increased blink rates in a subject can be a result of escalated anxiety, emotion, or result from excessive eye movement. Decreased rates stem more from the alpha-make stare, the inherent decoy from being detected in a lie.
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