What is a polygraph used for?
Correct answer: Measuring small changes in pulse and respiration

delayna
Flutterby, it is a pseudo- science , that is used against someone in some states and countries to convict for a crime . 😳 so never take one, cause even a innocent person can fail that test .

San
delayna, That's the truth. Sometimes just suggesting a lie detector test is to see how the person responds. Say "Sure I will take a test, but I want my lawyer present." and don't take the test.

trashmouth
fun fact it was used mostly in the 1950s they would check people if there comunist of gay/ lesbian and they would fire them. after that it was realy hard to finde a job and they would often kill themselves.

Woody
delayna, It can't be used to convict because it can't be used in a court of law