爱思英语编者按：孤独的学生在情感辨别测试上比不孤独的学生做得要差，但这种情况只有在告诉他们这是个社交技巧测试时才会出现。

Nobody likes feeling lonely, and some recent research suggests that the ache of isolation isn't only a psychological problem; unwanted solitude impacts physical health, too. Loneliness increases a person's risk of mortality by 26 percent, an effect comparable to the health risks posed by obesity, according to a study published this spring.