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argument167 一个比较没有逻辑的医学类 互拍中
167A167A folk remedy* for insomnia, the scent in lavender flowers, has now been proved effective. In a recent study, 30 volunteers with chronic insomnia slept each night for three weeks on lavender-scented pillows in a controlled room where their sleep was monitored. During the first week, volunteers continued to take their usual sleeping medication. They slept soundly but wakened feeling tired. During the second week, the volunteers discontinued their medication. As a result, they slept less soundly than the previous week and felt even more tired. During the third week, the volunteers slept longer and more soundly than in the previous two weeks. This shows that over a short period of time lavender cures ins
In this argument, the author claims that lavender could cure insomnia in a short period of time. To substrate【substantiate吧】 the conclusion, the arguer provides that during a three weeks clinical experiment, thirty volunteers who were slept soundly only with lavender-scented pillows and without use their usual sleeping medication. The statement is well-presented, but further reflection reveals that it suffers from several logic flaws.
To begin with, the author fails to provide us an effective experiment to prove the real function of the scent in lavender to cure chronic insomnia. An effective experiment should be composed with positive control group, negative control group, and test group, while providing enough samples. In this experiment the author only give us the group of volunteers who use both their usual sleeping medication and lavender-scented pillows. It is entirely possible that the change of sleep not only happened in those volunteers, but also happened in those who only use their usual sleeping medication. Without proving that the effect only happened in these volunteers, all the results the author reaches from the experiment are suspicious.
Furthermore, it is too short a period--three weeks to research the lavender-scented pillows’ treatment to【[to??]] chronic insomnia patients. Common sense tells us that insomnia is a long existing disease which could happen along one’s lives. Only three weeks' research, it cannot get a sound result in this experiment. What's more, the author only uses standards of the volunteer's report about sleep【】 such as sound, tried as the sleep quality scale is not enough. In a scientific experiment we need more data to prove the true effects in this experiment.
Last but not the least, the arguer fails to rule out other factors which may be cause【】 the changes of the third weeks【】 sleep in those volunteers. It is possible that in the third week 【the reason】why those volunteers slept more sound【ly】 is not because of the scent of lavender but because of lacking sleep in the first and second weeks. When the sleeping environment changed, especially to【】 those chronic insomnia patients, it was so possible that their sleep【ing】 habit had been disturbed. Moreover, because they did not use their usual sleep medicine during the second weed, their lacking of sleep became more serious. So the conclusion of the effect of treatment really happened during the third week is untenable.
In sum, the experiment given【前置】 merely scratches the surface of the treatment effects. Much more work is needed by providing more evidences about the changes of those volunteers' sleep after the third week. Furthermore, it could be helpful if the author provides the change of sleep in other chronic insomnia people's who only use their usual sleeping medication without lavender-scent pillows.
我觉得对study的攻击还可以有很多:病人的选择;room的情况;床;枕头;病人的心理因素;
我下面的提纲是:
第二,即使这些考虑没必要,那么,a,没能排除药物在试验中的影响。第二周的下降很可能是因为缺乏药物引起的,而第三周的上升可能有赖于第一周药物的滞后疗效。在试验中混杂药物,干扰了试验的有效性。
B,即使与药物无关,那么对病人对环境的适应,前两周的休息等等,都是造成第三周的上升的可能因素。作者没能排除这些。 |
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