2015考研英语暑假阅读以免我们忘记或让我们记住_大学英语阅读

2015考研英语暑假阅读以免我们忘记或让我们记住

　　And that did, indeed, turn out to be the case in his first experiment. This involved showing students photographs of positive scenes such as families playing together, negative scenes such as car accidents, and neutral ones, such as people on the phone. Those students with at least one gene for the rarer version of the protein were twice as good at remembering details of emotionally charged scenes than were those with only the common version. When phone- callers were the subject; there was no difference in the quality of recall.

　　That is an interesting result, but some of Dr de Quervain s colleagues at the University of Konstanz, in Germany, were able to take it further in a second experiment. In fact, they took it all the way along a dusty road in Uganda, to the Nakivale refugee camp. This camp is home to hundreds of refugees of the Rwandan civil war of 1994.

　　In this second experiment the researchers were not asking about photographs. With the help of specially trained interviewers, they recorded how often people in the camp suffered flashbacks and nightmares about their wartime experiences. They then compared those results with the 2b-adrenoceptor genes in their volunteers. As predicted, those with the rare version had significantly more flashbacks than those with only the common one.

　　Besides bolstering Dr de Quervain s original hypothesis, this result is interesting because only 12% of the refugees had the rarer gene. In Switzerland, by contrast, 30% of the population has the rare variety-and the Swiss are not normally regarded as an emotional people.