Emotions and moods are different; they operate over different time scales. Emotions are short-lived. It has been suggested that emotions are designed to be fleeting, because they provide our brain with valuable and timely information. If they were to persist, they would interfere with other, newer information being brought to our attention. A mood is slower, more like a long-term attitude, a background and slow-burning emotion which slants our view on the world. Emotions and moods alter Gwen’s attitude to events, tinker with the memories she recalls, change the way she thinks.
