According to a study published by Dr. Myrna Weissman, only : GMAT Sentence Correction (SC)
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21 Nov 2005, 22:38
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According to a study published by Dr. Myrna Weissman, only one percent
of Americans born before 1905 had suffered major depression by the age
of seventy-five; of those born since 1955, six percent had become
depressed by age twenty-four
.

(A) only one percent of Americans born before 1905 had suffered major
depression by the age of seventy-five; of those born since 1955, six
percent had become depressed by age twenty-four

(B) only one percent of Americans born before 1905 suffer major
depression by the age of seventy-five; if they are born since 1955, six
percent become depressed by age twenty-four

(C) of Americans born before 1905, only one percent of them have
suffered major depression by age seventy-five, but six percent of those
born since 1955 do by the age of twenty-four

(D) major depression is suffered by the age of seventy-five by only one
percent of Americans born before 1905, and by age twenty-four by the
six percent born since 1955

(E) Americans born before 1905 suffer major depression by the age of
seventy-five only one percent of the time, but six percent of those born
since 1955 did so by age twenty-four

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21 Nov 2005, 23:12
I think its A. The report must have been published after all the statistics cited happened in the past. Hence, use of past perfect seems correct.
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21 Nov 2005, 23:15
I vote for E. It seems for me the most ||.

Mikki
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21 Nov 2005, 23:27
(B) changes meaning of sentence
(C) not parallel
(D) passive not preferred
(E) awkward phrasing

A is the best choice for me.
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22 Nov 2005, 02:52
yup A is the best choice.

Past perfect is used because the article's already published. His findings was about things happened before his conclusions were made
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22 Nov 2005, 04:05
According to a study published by Dr. Myrna Weissman, only one percent
of Americans born before 1905 had suffered major depression by the age
of seventy-five; of those born since 1955, six percent had become
depressed by age twenty-four
.

(A) only one percent of Americans born before 1905 had suffered major
depression by the age of seventy-five; of those born since 1955, six
percent had become depressed by age twenty-four ---> I wonder why the sentence should use ";" here ( it should be a "," due to the presence of "according to......" , anyway, i pick A coz it seems more reasonable than the others.

(B) only one percent of Americans born before 1905 suffer major
depression by the age of seventy-five; if they are born since 1955, six
percent become depressed by age twenty-four----> severely wrong due to the bold part-->out

(C) of Americans born before 1905, only one percent of them have
suffered
major depression by age seventy-five, but six percent of those
born since 1955 do by the age of twenty-four---> imparallel tenses-->out

(D) major depression is suffered by the age of seventy-five by only one
percent of Americans born before 1905, and by age twenty-four by the
six percent
born since 1955---> "the six percent" of what?

(E) Americans born before 1905 suffer major depression by the age of
seventy-five only one percent of the time, but six percent of those born since 1955 did so by age twenty-four--> the bold part is unclear -->out

A maybe....
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22 Nov 2005, 06:54
The OA is 'A'.
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22 Nov 2005, 07:01
Late, but A.

Most people born before 1905 are no longer with us, therefore we need to use the past perfect tense. Of those born after 1955, most have already turned 24, so once again past perfect.
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22 Nov 2005, 07:20
GMATT73 wrote:
Late, but A.

Most people born before 1905 are no longer with us, therefore we need to use the past perfect tense. Of those born after 1955, most have already turned 24, so once again past perfect.

CR skills at play in SC..good job MATT
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