Well-being, welfare or wellness is a general term for the condition of an individual or group, for example their social, economic, psychological, spiritual or medical state; a high level of well-being means in some sense the individual or group’s experience is positive, while low well-being is associated with negative happenings. In economics, the term is used for one or more quantitative measures intended to assess the quality of life of a group, for example, in the capabilities approach and the economics of happiness. As with the related cognate terms ‘wealth’ and ‘welfare’, economics sources often contrast the state with its opposite.