刷题刷出新高度，偷偷领先！偷偷领先！偷偷领先！ 关注我们，悄悄成为最优秀的自己！
单选题
Although ethics classes are common around the world, scientists are unsure if their lessons can actually change behavior; evidence either way is weak, relying on contrived laboratory tests or sometimes unreliable self-reports. But a new study published in Cognition found that, in at least one real-world situation, a single ethics lesson may have had lasting effects. The researchers investigated one class session’s impact on eating meat. They chose this particular behavior for three reasons, according to study co-author Eric Schwitzgebel, a philosopher at the University of California, Riverside: students’ attitudes on the topic are variable and unstable, behavior is easily measurable, and ethics literature largely agrees that eating less meat is good because it reduces environmental harm and animal suffering. Half of the students in four large philosophy classes read an article on the ethics of factory-farmed meat, optionally watched an 11-minute video on the topic and joined a 50-minute discussion. The other half focused on charitable giving instead. Then, unknown to the students, the researchers studied their anonymized meal-card purchases for that semester—nearly 14,000 receipts for almost 500 students. Schwitzgebel predicted the intervention would have no effect; he had previously found that ethics professors do not differ from other professors on a range of behaviors, including voting rates, blood donation and returning library books. But among student subjects who discussed meat ethics, meal purchases containing meat decreased from 52 to 45 percent—and this effect held steady for the study’s duration of several weeks. Purchases from the other group remained at 52 percent. “That’s actually a pretty large effect for a pretty small intervention,” Schwitzgebel says. Psychologist Nina Strohminger at the University of Pennsylvania, who was not involved in the study, says she wants the effect to be real but cannot rule out some unknown confounding variable. And if real, she notes, it might be reversible by another nudge: “Easy come, easy go.” Schwitzgebel suspects the greatest impact came from social influence—classmates or teaching assistants leading the discussions may have shared their own vegetarianism, showing it as achievable or more common. Second, the video may have had an emotional impact. Least rousing, he thinks, was rational argument, although his co-authors say reason might play a bigger role. Now the researchers are probing the specific effects of teaching style, teaching assistants’ eating habits and students’ video exposure. Meanwhile Schwitzgebel—who had predicted no effect—will be eating his words.
Scientists generally believe that the effects of ethics classes are______.
A
B
C
D
使用微信搜索喵呜刷题，轻松应对考试！
答案：
解析：
：根据文章第一段提到的，虽然伦理课程在世界各地很普遍，但科学家们不确定这些课程是否能真正改变行为，证据要么依赖于人为设计的实验室测试，要么依赖于不可靠的自我报告。因此，科学家普遍认为伦理课程的作用很难确定，答案为A。
创作类型：
原创
本文链接：Scientists generally believe that the effects of e
版权声明：本站点所有文章除特别声明外，均采用 CC BY-NC-SA 4.0 许可协议。转载请注明文章出处。让学习像火箭一样快速，微信扫码，获取考试解析、体验刷题服务，开启你的学习加速器！
分享考题 
