I. Introduction
Emotions are an integral part of experiencing the world. Functioning emotions help us to perceive, think, and act correctly. The crucial role of emotions in general well-being becomes self-evident when they become dysfunctional. Consider the fact that one of the main aims of psychotherapy is to help people deal with difficult emotions [1]; that the likelihood of experiencing psychopathology has been linked to the tendency to experience extreme levels of emotions [2]; that our ability to make seemingly innocuous and everyday choices, such as what clothes to wear, becomes impaired if the areas related to emotions in the brain are damaged [3]. This latter example of dysfunction is of particular concern as people increasingly live longer and as a result become more susceptible to neurodegenerative diseases, such as dementia.