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A researcher discovered that people who have low-levels of

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Manager
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A researcher discovered that people who have low-levels of [#permalink]

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New post 18 Jan 2007, 04:24
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A
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D
E

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A researcher discovered that people who have low-levels of immune-system activity tend to score much lower on tests of mental health than do people with normal or high immune-system activity. The researcher concluded from this experiment that the immune system protects against mental illness as well as against physical disease.

The researcher’s conclusion depends on which of the following assumptions?

(A) High immune-system activity protects against mental illness better than normal immune-system activity does
(B) Mental illness is similar to physical disease in its effect on body systems
(C) People with high immune-system activity cannot develop mental illness
(D) Mental illness does not cause people’s immune-system activity to decrease
(E) Psychological treatment of mental illness is not as effective as is medical treatment

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Director
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New post 18 Jan 2007, 05:11
D is my answer. If the mental illness decreates the immunity, then level of immunity can't be used as a mesure to see whether immunity can protect against mental illness.

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New post 18 Jan 2007, 05:32
my answer is A

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New post 18 Jan 2007, 11:29
aurobindo wrote:
D is my answer. If the mental illness decreates the immunity, then level of immunity can't be used as a mesure to see whether immunity can protect against mental illness.



D for the same reasoning.

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New post 18 Jan 2007, 13:21
D....negate this and the argument falls apart.... causal relationship is reversed in this option

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New post 18 Jan 2007, 20:28
aurobindo wrote:
D is my answer. If the mental illness decreates the immunity, then level of immunity can't be used as a mesure to see whether immunity can protect against mental illness.


AgreeD
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Trying hard to conquer Quant.

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New post 18 Jan 2007, 23:13
D !
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"Education is what remains when one has forgotten everything he learned in school."

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New post 19 Jan 2007, 00:29
OA is D

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  [#permalink] 19 Jan 2007, 00:29
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