Opportunity Cost, Excess Profit, and Counterfactual Conditionals

Frontiers in Finance and Economics, 2009, 6(1) (April) 118−154

40 Pages Posted: 11 Nov 2007 Last revised: 14 Jul 2009

See all articles by Carlo Alberto Magni

Carlo Alberto Magni

Università degli studi di Modena e Reggio Emilia (UNIMORE) - School of Doctorate E4E (Engineering for Economics-Economics for Engineering)

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Abstract

Counterfactual conditionals are cognitive tools that we incessantly use during our lives for judgments, evaluations, decisions. Counterfactuals are used for defining concepts as well; an instance of this is attested by the notions of opportunity cost and excess profit, two all-pervasive notions of economics: They are defined by undoing a given scenario and constructing a suitable counterfactual milieu. Focussing on the standard paradigm [Peasnell, 1981, 1982; Peccati, 1987, 1990, 1991; Ohlson, 1995] and Magni's [2000, 2001, 2003, 2004, 2005, 2006] alternative paradigm this paper shows that the formal translation of the counterfactual state is not univocal and that Magni's approach retains formal properties of symmetry, additive coherence, homeomorphism, which correspond to properties of frame-independence, time invariance, completeness. Two introductory studies are also presented to illustrate how people cope with these counterfactuals and ascertain whether either model is seen as more "natural". A brief discussion of the results obtained is also provided.

Keywords: opportunity cost, excess profit, residual income, counterfactual, modelling, frame-independence, time invariance, completeness

JEL Classification: G12, G30, G31, M21, M41, A12, B41, D00, D46

Suggested Citation

Magni, Carlo Alberto, Opportunity Cost, Excess Profit, and Counterfactual Conditionals. Frontiers in Finance and Economics, 2009, 6(1) (April) 118−154, Available at SSRN: https://ssrn.com/abstract=1028749

Carlo Alberto Magni (Contact Author)

Università degli studi di Modena e Reggio Emilia (UNIMORE) - School of Doctorate E4E (Engineering for Economics-Economics for Engineering) ( email )

Italy

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