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Dr. Myrna Weissman

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by srisl11 » Fri Nov 21, 2008 10:10 pm
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

This was asked before but I couldn't understand the explanation in that post.
(May be I'm too dumb :( )
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by Jatinder » Fri Nov 21, 2008 10:49 pm
IMO D

Only D is parallel and have the right tense


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

awkward....wrong if usage

(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

Wrong usage of do; have here is auxiliary

(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

Parralel

(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

Not parallel
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by schumi_gmat » Fri Nov 21, 2008 11:06 pm
IMO A.

(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

Two independent clauses separated with semicolon.


(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.

But should introduce a contrast and have 2 independent clauses

(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

Passive . It is too complex and has too many uses of by

(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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by raunekk » Fri Nov 21, 2008 11:21 pm
i will go with A..

D changes the meaning that "age of seventy-five " suffered major depression.
Also it has a "passive " tense which is not preferred in gmat.


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 .

A uses past perfect tenses pertaining to the time frame depicted by the prepositions "before" and "since".

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) 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

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



i hope this helps

thanks.
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Re: Dr. Myrna Weissman

by karmayogi » Fri Nov 21, 2008 11:59 pm
IMO A.

B: suffer wrong use of present tense. 'if they are born ... twenty-four' seems like 'they' is referring to Americans born before 1905. Also, wrong conditional clause formation, correct one, : if + present + then + will + simple verb.

C: have suffered looks like all of them are still alive. 1955 do by the Americans born after 1955 do something to get depressed.

D: 'Major depression' can't be the subject. Also, non-parallel: 'by the age...by only one percent ... by age twenty-four by the ...'


E: distorts the meaning, 'suffer major depression ... only one percent of the time'
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by srisl11 » Sat Nov 22, 2008 12:27 am
OA A

But there is "past perfect " tense in A ....
My doubt is Why are we using past perfect tense when there are no two (past)actions taking place

am I missing something here? :?
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by maihuna » Mon Dec 29, 2008 7:04 am
Yes I am also interested in that....why past perfect...

BTW, I zeroed on of A vs C

can somebody point out the hell out o fC..
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by logitech » Mon Dec 29, 2008 9:56 am
maihuna wrote:Yes I am also interested in that....why past perfect...

BTW, I zeroed on of A vs C

can somebody point out the hell out o fC..
Events took place before the "study published"

(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

C is a horrible choice :)

have suffered means they still SUFFER

and DO is not parallel with HAVE!
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by yash_agg2001 » Tue Oct 13, 2009 6:01 pm
In option A, "of" is used in 'by the age of seventy-five', but not in 'by age twenty-four'. If "of" implied in 'by age twenty-four'?
Similar issue is present in other options as well.
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by winner's attitude » Tue Oct 26, 2010 10:39 pm
Can someone give concrete explanation on the usage of past perfect in this sentence ?
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by himanshi » Thu Nov 11, 2010 11:37 am
I don't understand why A is correct..??
It contains "Since" and the Past perfect tense in the 2 clause, whereas 'Since" only take the present perfect tense (As per the rules)

Can anybody please explain...

Thanks
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by cyrwr1 » Mon Feb 28, 2011 3:03 pm
what's the answer to this one?
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by makkiemaps » Mon Feb 28, 2011 4:05 pm
I am a novice but IMO, using past perfect makes sense here because if you apply logic, there are two past events indicated:

- Born before 1905 (past)
- Suffered depression by the age of 75 (past)

Correct me if I am wrong.

BTW, options C, D, E don't fit in and B implies that American still suffer which is incorrect. Hence answer has to be "A"
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by tetura84 » Tue Mar 01, 2011 2:10 am
srisl11 wrote: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

This was asked before but I couldn't understand the explanation in that post.
(May be I'm too dumb :( )
I see tense issue in all answer choices except A
First, non underline portion is,
According to a study published by Dr. Myrna Weissman = simple past tense

B. .... suffer = simple present
Also, if -condition is awkward.
C. suffer = simple present
D. is suffered = present + passive
E. suffer = simple present
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by atrayee345 » Wed Dec 19, 2018 3:41 am
Option (A) is the correct choice asit uses past perfect tense because major depression or its effect is continuous and both of these sentences are independent and related as we are talking about Americans.Hence (a).
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