Which one of the following methods is commonly known as lie detector?
Question and options
Which one of the following methods is commonly known as lie detector?
- Narco-Analysis Test
- Polygraph Test
- DNA Testing
- Brain mapping Test
Answer and explanation
Correct answer: B - Polygraph Test
The polygraph test records bodily responses such as blood pressure, pulse, breathing and skin conductivity while questions are asked, and is popularly called the lie detector test. Narco-analysis uses a drug to lower inhibitions, brain mapping records brain-wave responses, and DNA testing identifies a person from genetic material.
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