The constructs of mental health and happiness overlap with each other to a substantial degree. Positive or negative feelings are intrinsic to each and to their opposites, and the constructs, although distinct, have partly similar causes and consequences. The vitamin model summarized here originated primarily as a perspective on mental health (Warr, 1987) but has since been applied mainly to happiness or unhappiness in settings such as paid work, unemployment and retirement (e.g., Warr, 2007). This chapter also focuses on happiness and unhappiness; it outlines main aspects of the framework as modified over several years.
Conceptual Starting PointsBuilding on a wide range of earlier perspectives, the vitamin model seeks to be distinctive in three principal respects. First it aims for comprehensiveness in outlook and content, bringing together themes and research findings from diverse models, focusing on sources from within the person as well as from the environment, and including many mental processes beyond conventional types of appraisal. The framework also explicitly addresses different levels of scope, embracing processes in a person's life as a whole, within separate domains (family life, a social institution, paid work, unemployment, and so on), and also as part of attitudes to particular things, events or ideas. These three levels of scope may be referred to as "context-free", "domain-specific" and "facet-specific" respectively. Many approaches to this area are stress-oriented, being focused explicitly and entirely on harmful aspects of the environment and ways to cope with those. That immediately cuts out huge sections of experience, and generates a particular set of orienting concepts and research methods which necessarily exclude other ways of thinking. Schaubroeck (2012, p. 86) has drawn attention to dangers arising from over-reliance on any theoretical framework: "(a) restricting the boundaries of the phenomena that are considered relevant, (b) introducing barriers to changing or supplanting theories, (c) biasing estimation of relationships due to omitted variables, (d) encouraging authors to exclude contrary evidence and insights from their narratives, and (e) limiting how scholars evaluate theoretical contributions". The vitamin model seeks to minimize those kinds of constraint. Although the framework inevitably creates its own conceptual template, that is intended to be less restrictive than others.Second, the model does not follow the common practice of conceptualization in terms of mutually exclusive categories of elements, such as "resources" as a group or in terms of sets of stressors which are designated as one or other of "challenges" or "hindrances". Such approaches are fraught with problems of definition and boundary-setting, and can lead to simplifying