For mainstream economists, the prices of financial assets like shares and derivatives are determined by objective assessments of the future revenue streams that the holder of the asset is entitled to. But it is far more plausible to see them as the outcome of interactions between a variety of different financial valuation conventions, or lay theories of value as I called valuation conventions in my earlier post. This post reflects on the contributions of John Maynard Keynes, André Orléan and Jens Beckert to explaining how valuation conventions influence financial asset values.
Different people may assess the value of a thing differently, but to reach agreement on values, they need to offer explanations of those assessments in terms that other people can find reasonable. Usually this means that they will need to invoke socially acceptable standards of value to justify their assessments. I call these standards lay theories of value, and this post introduces this concept.