Hannah is playing with her seven-month-old niece,Elie.She rolls a toy truck toward her and she tries to roll it back.One time the truck rolls behind a chair and is out of sight.Elie seems to forget about the truck and about the game they had both enjoyed playing.This is because Elie has not achieved:

Question

Quizplus · Accepted Answer

Elie's apparent forgetting of the toy truck suggests that she has not yet achieved object permanence, which is the understanding that objects continue to exist even when they are out of sight. This is a key developmental milestone that typically occurs between 8 and 12 months of age. Conservation refers to the understanding that a quantity or amount stays the same even when it is rearranged or appears different. Sensorimotor memory refers to the ability to remember sensory experiences, such as a taste or touch. Egocentrism is the tendency to view the world only from one's own perspective, which is characteristic of young children but typically diminishes with age. None of these concepts fully explain Elie's behavior in forgetting the toy truck.

Hannah Is Playing with Her Seven-Month-Old Niece,Elie