To stop baby Rudy from crying for a sharp knife on the kitchen table, his mother put it in her apron pocket. "Out of sight, out of mind," she said, and it worked. Rudy's mother has capitalized on his lack of the concept of:

Question

Quizplus · Accepted Answer

Rudy's mother has taken advantage of his lack of understanding of object permanence, which means the understanding that objects continue to exist even when they are out of sight. By hiding the knife in her apron pocket, Rudy can no longer see the knife and it is "out of mind" for him.

To Stop Baby Rudy from Crying for a Sharp Knife