Adam Smith: 'A linen shirt … is, strictly speaking, not a necessary of life. The Greeks and Romans lived, I suppose, very comfortably though they had no linen. But in the present times, through the greater part of Europe, a creditable day-labourer would be ashamed to appear in public without a linen shirt, the want of which would be supposed to denote that disgraceful degree of poverty which, it is presumed, nobody can well fall into without extreme bad conduct.'
The relevance of interdependent economic value, including social relativity and associated externalities, was explicitly recognised in major post-war discussions and reviews of welfare economics
Social reference-dependence in economic evaluation, behaviour and experience is a multifaceted issue, reflected in diverse literature and variety of terminology
Directly testing for status concerns is challenging, as with observational data it is difficult to separate unobserved intrinsic consumption utility from a desire to signal high income and status
Field-experimental evidence on platinum credit cards as status goods shows demand increases when the status signalling component is isolated, and that platinum cards are more likely to be used in social situations
Making a status good more accessible to lower income customers weakens its income signalling power, imposing a positional externality on higher-income consumers, who then demand a more exclusive status good
Increased self-esteem may have a causal effect reducing the demand for status goods, suggesting self-image and social-image may be substitutes rather than complements
Many models of relative comparisons simply assume that the reference standard is exogenously given, but individuals may choose their references as-if optimally, balancing self-improvement and self-enhancement