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Researchers have discovered that caffeine can be as [#permalink]
15 Sep 2005, 17:46
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Researchers have discovered that caffeine can be as physically addictive as other psychoactive substances. Some people find that they become unusually depressed, drowsy, or even irritable if they do not have their customary dose of caffiene. This is significant because as many people consume caffeine as consume any one of the other addictive psychoactive substances.
Which one of the following can be logically concluded from the information above?
A) There is no psychoactive substance to which more people are physically addicted than are addicted caffiene.
B) A physical additction to a particular psychoactive substances will typically give rise to diverse psychological symptoms.
C) Not all substances to which people can become physically addicted are psychoactive.
D) If one is physically addicted to a psychoactive substance, one will become unusually depressed when one is no longer ingesting that substance.
E) If alcohol is a physically addictive psychoactive substance, there are not more people who consume alchohol than consume caffiene.
E for me. Logic:
Statement: As many people consume caffeine as consume any one of the other addictive psychoactive substances.
Inference: Number of people consuming caffeine is equal to the number of people consuming any other addictive psychoactive substance.
Option E: If alcohol is a physically addictive psychoactive substance, there are not more people who consume alchohol than consume caffiene.
The argument says that caffeine is as addictive as other psychoactive substances and when one doesn't have caffeine, one becomes unusually depressed. It follows that one is likely to become unusually depressed if one no longer ingests other psychoactive substances.
E is incorrect because it says that "as many people consume caffeine" not more people....
I chose E here as well. If follows logically from the passage. Since there are as many people consuming caffiene as ANY other psychoactive substances than the amount of people consuming caffeine is equal to or more than the amount of people consuming any other psychoactive substance.
I didn't chose D because it isn't supported by the passage. The passage gives symptoms ONLY for those who miss their ususal dose of caffeine. D applies one of those symptoms to ALL psychoactive substances. No where in the passage is that stated.