研究人员测试了368名在读大学生，以及439名他们的家庭成员，以获得一张学生和他们的母亲的自恋程度图表。
Reserchers surveyed 368 undergraduate college students and 439 of their family members to get a picture of the narcissistic traits of the students and of their mothers.
研究人员测试了368名在读大学生，以及439名他们的家庭成员，以获得一张学生和他们的母亲的自恋程度图表。
Reserchers surveyed 368 undergraduate college students and 439 of their family members to get a picture of the narcissistic traits of the students and of their mothers.
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