Answer:
context effects
Explanation:
We remember objects with respect to the environment they fit into. The object may be forgotten if the environment or context changes. Our perception depends on the background of the stimulus.
The scenario over here perfectly illustrates the effect of context. We are used to seeing a backpack in the bedroom but the kitchen is not a place where a backpack is kept. This makes us forget about the backpack as we enter the kitchen and remember it after going into the bedroom.
Hence, this case illustrates context effect.
