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a researcher studying drug addicts found that,on

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a researcher studying drug addicts found that,on [#permalink] New post 13 Oct 2006, 01:24
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a researcher studying drug addicts found that,on average,they tend to manipulate other peoplea great deat more than nonaddicts do.the researcher concluded that people who frequently manipulate other people are likely to become addicts.

which of the following,if true,most seriously weakens the author's conclusions??

a. after becoming addicted to drugs,drug addict learn to manipulate other people as aa way of obtaining drugs.
b. when they are imprisoned,drug addicts often use their ability to manipiulate other people to obtain better living conditions.
c. some nonaddicts manipulate other [people more than some addicts do.
d. people awho are likely to become addicts exhibit unusual behavior patterns other than frequent manipulation of other people.
e. the addicts that the researcher studied were often unsuccessful in obtaining what they wanted when they manipulated other people.
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 [#permalink] New post 13 Oct 2006, 01:33
Was discussed a few days back.
Ans is A. causal CR. You weaken the argument by reversing cause and effect.
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 [#permalink] New post 13 Oct 2006, 07:02
Yes - one more for A.
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 [#permalink] New post 13 Oct 2006, 08:56
A is the answer
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 [#permalink] New post 13 Oct 2006, 11:29
Why not 'C'? Can someone explain why this doesn't weaken the argument?

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 [#permalink] New post 13 Oct 2006, 12:56
Clear A, would discard C on the use of some. A is definitive, C is too ambiguous.
  [#permalink] 13 Oct 2006, 12:56
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