Answer:
Object Permanence
Step-by-step explanation:
Based on the information provided it can be said that these different responses most likely reflect differences in Object Permanence. This term refers to the understanding that objects still exist even though the individual cannot see, hear, touch, smell, or sense the object in any way. In this scenario, the brother believed that Emanuel was getting rid of the blocks and the 8-month old brother knows that they are still in the chest and wants to continue playing with them. Yet, for the niece, the blocks no longer exist and she just played with the next toy that she could find.