What are some physiological signs of deception during an interview?

Increased perspiration and observable changes in breathing rate are commonly recognized physiological signs of deception during an interview. When an individual is experiencing stress or anxiety, which often accompanies lying, their body tends to respond with noticeable physiological changes. Increased perspiration can manifest as sweaty palms or a flushed complexion, while changes in breathing rate may include rapid or shallow breaths. These responses are reflective of the body’s fight-or-flight reaction, triggered by the stress of potentially being caught in a lie.

On the other hand, consistent eye contact and a calm voice typically signify comfort and confidence, rather than deception. Rapid speech and relaxed posture may suggest that a person is at ease and not under pressure, which would not align with the signs of deception. Similarly, frequent smiling and open body language usually indicate openness and honesty, as opposed to the anxiety and stress associated with telling lies. These contrasting signs highlight how physiological responses can vary significantly between truths and deceit.