Tom Is Interested in Working for an Intelligence Branch of the Government,and

question 32

Multiple Choice

Tom is interested in working for an intelligence branch of the government,and a polygraph test is part of the interview process.Though Tom intends to be honest,he is worried that the polygraph will say he is lying when he isn't.Tom's friend Cameron assures Tom that polygraph tests are infallible.Is he right?

• A) Yes.Polygraphs pick up certain physiological responses associated with lying,and there's no way to change or hide those responses.
• B) Yes.Though much of the research has not been made public,many government agencies rely on polygraphs,and they would not do so if the tests were fallible.
• C) No.Anxiety may cause false positives and people can be coached to "beat" polygraphs.
• D) No.Polygraph machines are just props and the person watching for cues that the subject is lying,may make errors.

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Definitions:

Volume

The quantity of three-dimensional space occupied by a liquid, solid, or gas.

Density

The mass per unit volume of a substance, indicating how compact the substance is.

Glass

A hard, brittle substance, commonly transparent or translucent, made by fusing sand with soda, lime, and sometimes other ingredients and cooling rapidly.

Volume

The quantity of three-dimensional space enclosed by a closed surface or the space that a substance (solid, liquid, gas, or plasma) occupies.