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Author Topic: smokers and coffee  (Read 433 times)

dubsy

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smokers and coffee
« on: November 01, 2007, 10:09:34 AM »
Recent studies have demonstrated that smokers are more likely than nonsmokers to develop heart disease.  Other studies have established that smokers are more likely than others to drink caffeinated beverages. THerefore, even though drinking caffeinated beverages is not thought to be a cause of heart disease, there is a positive correlation between drinking caffeinated beverages and the development of hear disease.

The argument's reasoning is most vulnerable to criticism on the grounds that the argument fails to take into account the possibility that:

TCR: smokers who drink caffeinated beverages are less likely to develop heart disease than are smokers who do not drink caffeinated beverages.

But I was confused by these 2 answer choices:
D) It is only among people who have a hereditary predisposition to heart disease that caffeine consumption is positively correlated with the development of heart disease
E) There is a common cause of both the development of heart disease and behaviors such as drinking caffeinated beverages and smoking.

If anyone could explain TCR and why the above 2 answer choices are incorrect, I would be so grateful. Thanks so much in advance.
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Bowie

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Re: smokers and coffee
« Reply #1 on: November 01, 2007, 10:19:32 AM »
Recent studies have demonstrated that smokers are more likely than nonsmokers to develop heart disease.  Other studies have established that smokers are more likely than others to drink caffeinated beverages. THerefore, even though drinking caffeinated beverages is not thought to be a cause of heart disease, there is a positive correlation between drinking caffeinated beverages and the development of hear disease.

The argument's reasoning is most vulnerable to criticism on the grounds that the argument fails to take into account the possibility that:

TCR: smokers who drink caffeinated beverages are less likely to develop heart disease than are smokers who do not drink caffeinated beverages.

But I was confused by these 2 answer choices:
D) It is only among people who have a hereditary predisposition to heart disease that caffeine consumption is positively correlated with the development of heart disease
E) There is a common cause of both the development of heart disease and behaviors such as drinking caffeinated beverages and smoking.

If anyone could explain TCR and why the above 2 answer choices are incorrect, I would be so grateful. Thanks so much in advance.


The conclusion is that, even though drinking caffeinated beverages is not thought to be a cause of heart disease, there is a positive correlation between drinking caffeinated beverages and the development of heart disease. The TCR: Smokers who drink caffeinated beverages are less likely to develop heart disease than are smokers who do not drink caffeinated beverages would weaken that conclusion. It is saying that there is a positive correlation between drinking the caffeinated beverages and heart disease, but what if smokers who drink caffeinated beverages are less likely to develop heart disease than the smokers who do not drink such beverages? That would hurt that argument and the supposed correlation. It wasn't considered in the argument, so it is the correct answer. That is my take on it, I could be wrong though.

geegorie

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Re: smokers and coffee
« Reply #2 on: November 01, 2007, 10:28:57 AM »
Bowie is right. Because this is a weaken question type you are look for a way to attack the argument. The TCR directly attacks the conclusion of the argument. Remember when you are weaken a argument you want to attack or undermine the conclusion, most of the time. Also, with a weaken question type we are going to take the best or the one AC that most weakens the argument. D and E both in their own way weaken the argument, but the TCR most weakens the argument.

Hope this helps.
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