When new information interferes with that already stored in our memory,they can push aside or get mixed up with the old information.

This is known as interference in cognitive psychology. The two types of interference are proactive interference and retroactive interference. Proactive interference occurs when old information interferes with new information, whereas retroactive interference occurs when new information interferes with old information. Both types of interference can lead to forgetting and memory distortions. Strategies such as spacing out learning sessions, using mnemonic devices, and practicing retrieval can help reduce interference and enhance memory retention.