The reading passage contends that a the
brain scan polygraph is the better tool to detect a lie than the conventional polygraph
by giving three explains. explanations. On
the other hand, the lecturer contradicts the reading by saying that none of the
three explains are convincing.
First of all, the lecturer
argues that the truth is often misinterpreted as
a lies using a the brain scan lie detector. When the brain is holding
information, the polygraph detects an increase in activity in the parts of brain which are the same ones used
as when people tell a lie. To be specific, if the truth an honest person tells an embarrassing or sensitive information, then a
the brain scan lie detector may indicate
dishonesty. This casts doubt on the reading passage’s claim that the truth is
accurately judged by using a brain scan lie
detector.
In addition, the speaker
asserts that results are not identifies in an objective method.
This is because each people person’s
brain has different functions. Also, there is no standard criterion for
interpreting the results of a new form of polygraph. Therefore, they still need
experts to analyze the results of the subjects’ experiment. This refutes the reading passage’s claim
that the results can be analyzed in an unbiased way.
Last but
not least, the final point made by lecturer is that a new polygraph makes it easier for people to
deceive than the to fool than a traditional one. There are two examples
reasons to explain this. First, when people are
solving a difficult math questions, their brain may indicate that they
tell a lie. Also, if the people practice and rehearse to tell the untruth
lie, their brain will activate as if he or she is telling the truth. This contradicts the
reading passage’s claim that a brain scan lie detector is hard to
deliberately trick.