"They actually show a person's body any foreign object attached anywhere in the body, even if it is internally.

VOA: standard.2009.12.30

If I went under here and then the people said, "Where the hell did he go? Class is over," that would show a lack of object permanence.

如果我蹲在这里,有人说,"他去哪了,下课了耶",这话就表现出他缺乏客体永存性的概念

耶鲁公开课 - 心理学导论课程节选

If I went under here and then the people said, "Where the hell did he go? Class is over," that would show a lack of object permanence.

如果我蹲在这里,有人说,"他去哪了,下课了耶",这话就表现出他缺乏客体永存性的概念

耶鲁公开课 - 心理学导论课程节选