THE ROLE OF EMOTION IN THE RETRIEVAL OF INFORMATION

Why do we remember certain events in our life but we cannot remember what we had for lunch last week? The way in which we relate to the world is heavily influenced by our memories, and in part by the emotions which we felt when we experienced the said event. Why do we recall events or information processed whilst we experienced intense emotion more vividly than if we experienced the event in a neutral state of mind? How does emotion affect and influence our memory?