Retroactive inhibition

The  Interference theory states that people forget not because memories are actually lost from storage, but because other information gets in the way of what people want to remember.

This theory along with the decay theory have been proposed for reasons why people forget.

Types
According to the theory there are three kinds of interference: proactive interference, retroactive interference and output interference.

Proactive interference
Proactive interference occurs when information learned earlier disrupts the recall of material learned later. This can become a problem when new information cannot be used correctly as it is interfered with by the older information.

Retroactive interference
Retroactive interference occurs when the material learned later disrupts retrieval of information learned earlier, so old information overlaps with new information.

Output interference
Output interference occurs when the "activity of retrieving, ITSELF", interferes with the retrieval of the actual information needed in the first place. Primarily, this is caused by the limited capacity of the short-term memory.

Papers

 * Google Scholar