Listen to the audio file and answer the following questions:
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1. Why does the telephone software deter liars?
a) The software system performs as it is supposed to.
b) The callers are deceived into believing the software can detect lies.
c) The callers are afraid of the police.
d) The companies have a list of earlier liars.
2. What does the software detect?
a) Differences in the use of words.
b) The number of verbs in a sentence.
c) Involuntary changes in speech wave-form.
d) Whether a caller is old or young, male or female.
3. The article believes that the software
a) has not really proven its validity.
b) is based on good science.
c) is almost perfect.
d) is capable of further refinement.
4. Despite not being scientifically validated, the software still deters liars
a) because it's still 60 percent accurate.
b) because it is able to bluff people.
c) because it's still 30 percent accurate.
d) because it is used by the police.
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