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TOPIC: ARGUMENT53 - Thirteen years ago, researchers studied a group of 25 infants who showed signs of mild distress when exposed to unfamiliar stimuli such as an unusual odor or a tape recording of an unknown voice. They discovered that these infants were more likely than other infants to have been conceived in early autumn, a time when their mothers' production of melatonin-a hormone known to affect some brain functions-would naturally increase in response to decreased daylight. In a follow-up study conducted earlier this year, more than half of these children-now teenagers-who had shown signs of distress identified themselves as shy. Clearly, increased levels of melatonin before birth cause shyness during infancy and this shyness continues into later life.
WORDS: 356
TIME: 00:30:00
DATE: 2010-2-19
In this argument, the author draws his/her conclusion that more melatonin before birth will make one shyness in his/her infancy and later life. Admittedly, at first glance, it is convincing, however, further reflecting reveals that this argument suffers from several flaws.
To begin with, the credibility of the study is open to doubt. In this study, only 25 infants were involved, and this quantity is too small to give us a convincing result. It is totally possible that other 2500 or more infants who were conceived in early autumn are all extroverted. If any case is true, the result of the study has no value at all. Additionally, the arguer has never mentioned whether these samples are chosen randomly, thus representations of the result is open to doubt too. Perhaps, these infants are all from one community, and other infants of the whole country who was conceived at the same time have little these symptoms at all. Without enough convincing evidences, the result of this study is dubious.
In addition, the cause-and-effect relationship between infants' shyness and the more mount of melatonin before they birth is unconvincing. Only based on the sequence of these two events, it is hasty and cursory to get the cause-and-effect relationship between the two. Perhaps, they two have no relation at all, and other factors might be blamed for this shyness. For example, these infants’ parents are more inclined to shy, and hereditary factors should be responsible for this shyness. Unless the arguer gives other information to support his/her assertion, his or her viewpoint is suspicious.
Finally, the arguer's assertion that this shyness would continue in later life is dubious, for he/she gives no evidence to indicate that. In common sense, we all know that social interactions can influence one's character and behavior. It is entirely possible that these teenagers will become more exocentric in future life through more interactions with people.
To sum up, the author's conclusion is dubious and suspicious at best. To convince us, he/she should provide more information on the credibility and representation of the study, other possible explanations for shyness, and why these symptoms will continue. |
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