Which physiological conditions are measured by polygraph tests?

Which physiological conditions are measured by polygraph tests?

• A. Heart rate, blood pressure, and temperature
• B. Heart rate, blood pressure, respiration, and skin conductivity
• C. Heart rate, respiration, and body temperature
• D. Blood pressure, body temperature, and skin moisture

Answer: (B)

Polygraph tests, commonly known as lie detector tests, are designed to measure various physiological responses that are believed to correlate with deception. The correct choice includes heart rate, blood pressure, respiration, and skin conductivity, all of which are key indicators during a polygraph examination. Heart rate is one of the primary physiological markers that can indicate changes in emotional state. When a person is anxious or deceptive, their heart rate may increase. Blood pressure is also tracked, as it can rise in response to stress or anxiety. Respiration rate is measured too, as changes in breathing patterns may occur when a person is under stress. Lastly, skin conductivity—or galvanic skin response—measures the electrical conductance of the skin, which can increase when an individual experiences heightened emotional states, such as fear or anxiety. This combination of measurements provides a more comprehensive picture of the subject's physiological state, helping to assess whether their responses during questioning indicate truthfulness or deception.

Polygraph tests, commonly known as lie detector tests, are designed to measure various physiological responses that are believed to correlate with deception. The correct choice includes heart rate, blood pressure, respiration, and skin conductivity, all of which are key indicators during a polygraph examination.

Heart rate is one of the primary physiological markers that can indicate changes in emotional state. When a person is anxious or deceptive, their heart rate may increase. Blood pressure is also tracked, as it can rise in response to stress or anxiety. Respiration rate is measured too, as changes in breathing patterns may occur when a person is under stress. Lastly, skin conductivity—or galvanic skin response—measures the electrical conductance of the skin, which can increase when an individual experiences heightened emotional states, such as fear or anxiety.

This combination of measurements provides a more comprehensive picture of the subject's physiological state, helping to assess whether their responses during questioning indicate truthfulness or deception.