Full text of this item is not currently available on the LRA. \ud The final published version is available at The original publication is available at www.springerlink.com, Doi: 10.1007/s10440-008-9343-yThis survey paper provides first for an overview of how quantum-like concepts could be used in macroscopic environments like economics. The paper then argues for the use of the concept of a quantum mechanical wave function as an ‘information wave function’.\ud A rationale is provided on why such interpretation is reasonable. After having defined the ‘information wave function’, Ψ (q), we argue how |Ψ(q)|² can be interpreted as a Radon-Nikodym derivative. We consider how we can connect, using the |Ψ(q)|², the Blackwell and Dubins (Ann. Math. Stat. 33:882–886, 1961) Theorem with Rényi’s (Proceedings of the Fourth Berkeley Symposium on Mathematical Statistics and Probability, 1961) measure of quantity of information. We also define ‘ambiguity of information’ and ‘multi-sourced information’
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