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  3. Communications technologies are far from equal when it comes to conveying the truth. The first study to compare honesty across a

Communications technologies are far from equal when it comes to conveying the truth. The first study to compare honesty across a

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问题     Communications technologies are far from equal when it comes to conveying the truth. The first study to compare honesty across a range of communications media has found that people are twice as likely to tell lies in phone conversations as they are in emails. The fact that emails are automatically recorded--and can come back to haunt(因扰)you--appears to be the key to the finding.
    Jeff Hancock of Cornell University in Ithaca, New York, asked 30 students to keep a communications diary for a week. In it they noted the number of conversations or email exchanges they had lasting more than 10 minutes, and confessed to how many lies they told. Hancock then worked out the number of lies per conversation for each medium. He found that lies made up 14% of emails, 21% of instant messages, 27% of face-to-face interactions and astonishing 37% of phone calls.
    His results, to be presented at the conference on human-computer interaction in Vienna, Austria, in April, have surprised psychologists. Some expected emailers to be the biggest liars, reasoning that because deception makes people uncomfortable, the detachment(非直接接触)of emailing would make it easier to lie.  Others expected people to lie more in face-to-face exchanges because we are most practiced at that form of communication.
    But Hancock says it is also crucial whether a conversation is being recorded and could be re-read, and whether it occurs in real time. People appear to be afraid to lie when they know the communication could later be used to hold them to account, he says. This is why fewer lies appear in email than on the phone.
    People are also more likely to lie in real time--in an instant message or phone call, say--than if they have time to think of a response, says Hancock. He found many lies are spontaneous(脱口而的)responses to an unexpected demand, such as: "Do you like my dress?"
    Hancock hopes his research will help companies work out the best ways for their employees to communicate. For instance, the phone might be the best medium for sales where employees are encouraged to stretch the truth. But given his results, work assessment, where honesty is a priority, might be best done using email.
It can be inferred from the passage that ______.
选项 A、honesty should be encouraged in interpersonal communications
B、more employers will use emails to communicate with their employees
C、suitable media should be chosen for different communication purposes
D、email is now the dominant medium of communication within a company
答案C
解析 推理判断。最后一段，Hancock希望他的研究可以帮助公司员工找到最佳的交流方式。例如，做销售最好用电话；工作评估则用电子信函。由此可推断不同的交流目的应使用与之相适应的交流方式。C)正确。
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