Which type of memories are explicitly stated to not be stored?

The correct answer highlights that positive emotional memories are explicitly stated to not be stored. This is significant because it suggests that while positive experiences can lead to feelings of well-being, they might not always be formally encoded or retrievable as distinct memories compared to other types of memories.

In contrast, traumatic memories are often vividly remembered due to their impact and the intensity of the emotions associated with them. Short-term memories are by definition brief and are usually replaced with new information, but they are still stored temporarily in the brain for use. Long-term memories involve the storage of information over extended periods, which includes a vast range of emotional experiences.

The concept here indicates that positive emotional experiences are not necessarily preserved as explicit memories in the same way that negatively charged or significant memories are, reflecting a phenomenon in psychological studies about how we process and remember different types of experiences.