Question

Studies have documented that smiling is a universal and effective way to lift mood. But in the latest research on the power of the smile, researchers led by Marcus Munafo of the University of Bristol in England found that even seeing smiles on the faces of others can have a profound effect on a person's tendency toward violence or aggression — that is, as long as that person recognizes the smile as one of happiness, and not as a sneer (譏笑)．

Munafo and his colleagues conducted a series of experiments involving normal adults and highly aggressive teens referred to a youth program, either by educational authorities or the courts. About 70% of the teens already had a criminal record.

In the first experiment, 40 healthy adults, aged 18?30, looked at facial expressions on the computer ranging from happy to angry with increasingly difficult ones to discern in between. Participants were asked how angry they felt and then had to rate the images as displaying either happiness or anger — there was no option for “unclear” or “unable to tell”. From these ratings, the scientists could generate a score of their preference toward happiness or anger.

Previous research found that aggressive people — including violent offenders — tend to consider even a common expression as an unfriendly one. “You looking at me？” can easily turn a simple question into a tragic fight.

Based on their original scores, half of the participants were then told by the computer that some of the unclear faces that they had rated as angry should have been scored as happy. This was intended to guide them toward judging the in?between faces more positively. The other 20 received feedback that simply proved their first choices, creating a control group.

After this training, both groups were tested again and the group that received the biased (有偏見的) feedback shifted its ratings of unclear faces toward the happy side. Participants were also asked to rate their level of angry feelings again after completing the second round of testing. Those who were trained to consider unclear faces as happier reported feeling less angry afterward.

The researchers next focused on the 46 adolescents from the high risk youth program. These teens completed the same testing, but both the youth and the staff reported on the teens' levels of aggressive behavior before the testing started and for two weeks afterward. The teens trained to interpret unclear facial expressions more positively were significantly less aggressive two weeks later.

“The results of our experiments strongly suggest that the understanding of emotional facial expressions plays a causal role in subjective anger and aggressive behavior，”the authors conclude.

That doesn't mean that smiles alone are the answer to violence among adolescents — previous research in which anti?social youth were trained to better recognize emotions, for example, did not have any effect on their level of aggressive behavior. But this earlier study focused on improving teens' understanding of clear facial signals, not unclear ones. Since unclear signals are more likely to be misunderstood, it may be that violent behavior in some youth exists with their constant misunderstanding of angry expressions where they don't exist, which push them to aggressive responses. The findings suggest that helping young people, particularly those easy to be violent, to learn to give others the benefit of the doubt when they see what they think is a threatening face could help end the vicious (惡性的) cycle of violence.

1.The underlined word “discern” (Paragraph 3) means ________.

A．display obviously B．identify clearly

C．describe correctly D．value properly

2.According to Munafo's research, the anger and violent behavior in some youths resulted from ____.

A．their misunderstanding of facial emotions of others

B．their lack in knowledge of emotion recognition

C．their in?born tendency toward violence or aggression

D．their experience of being offended by others on purpose

3.The method Munafo and his colleagues used in their research is ________.

A．field investigation

B．case study

C．observation and analysis

D．experiment and comparison

4.What happens to the participants after receiving certain feedbacks?

A．They can interpret unclear facial expressions.

B．They put an end to their aggressive behavior.

C．They tend to judge the in?between faces positively.

D．It makes no difference in their level of aggressive behavior.

5.Which of the following will Munafo and his group probably agree with?

A．Just smile as much as possible.

B．Misunderstanding is the root of violence.

C．Seeing smiles can lower aggression.

D．Control our anger to avoid violence and aggression.

 

Answer 1

1.B

2.A

3.D

4.C

5.C

【解析】

試題分析：本文是一篇研究報(bào)告。微笑是不是就一定會(huì)讓人心情愉快呢？其實(shí)，只要不把微笑變成譏笑，這種效果自然是有的。

1.詞義猜測題。根據(jù)文章第三段第二句中“there was no option for’unclear’or’unable to tell’”可知，劃線詞在此處的意思應(yīng)為“清晰地辯別出來”。答案B符合文意，故選B。

2.推理判斷題。根據(jù)文章第一段“But in the latest research on the power of the smile…that is,as long as that person recognizes the smile as one of happiness, and not as a sneer（譏笑）.”可推知，很多人沖動(dòng)或行為過激，有時(shí)候是因?yàn)榘延焉频奈⑿Ξ?dāng)成譏笑了。故選A。

3.推理判斷題。根據(jù)文章第三段第一句“In the first experiment…”和第四段第一句“Previous research found that aggressive people…”可推知，Munafo和他的同事們的這項(xiàng)調(diào)查使用了實(shí)驗(yàn)和比較的方法。故選D。

4.細(xì)節(jié)理解題。根據(jù)文章第五段第二句“This was intended to guide them toward judging the inbetween faces more positively.”可知，故選C。

5.推理判斷題。根據(jù)文章第一段“But in the latest research on the power of the smile…that is,as long as that person recognizes the smile as one of happiness, and not as a sneer（譏笑）.”和下文中的實(shí)驗(yàn)結(jié)果可推知，微笑可以減少人們的過激行為。故選C。

考點(diǎn)：科教類閱讀