What are some physical signs that may indicate someone is lying?

When assessing signs that may indicate someone is lying, physical manifestations can be telling. Distended neck veins and constant movement can be associated with heightened stress and anxiety, which are common reactions when individuals are not telling the truth. When someone feels pressured or guilty, their body may exhibit physiological responses, such as increased blood pressure, which can lead to the distention of neck veins. Additionally, constant movement may be a result of nervous energy or a desire to distract from the deception, as the individual may fidget or make abrupt gestures as they attempt to maintain their composure.

It's important to note that the other options do not typically correspond with indicators of deceit. Excessive laughter and a calm demeanor often suggest comfort and confidence rather than deception. Staring directly and maintaining stillness can signal honesty and attentiveness, as many people maintain eye contact when telling the truth. Cleansing of the throat and prolonged silence might indicate discomfort or a lack of preparedness to respond, but these signs do not directly correlate with deception in the way that signs associated with stress and anxiety do.