On the Impossibility of Using 'the Correct' Cost-Benefit Aggregation Rule

Autor: Agata Matarazzo, Giuseppe Munda
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Popis: PurposeThe purpose of this paper is to deal with one of the technical difficulties of private and social cost–benefit analysis, i.e. the choice of the proper cost–benefit aggregation rule (or method) to use, when a private capital investment decision has to be taken or a public project appraisal has to be carried out.Design/methodology/approachAlthough the considerable amount of existing literature, the problem of the choice of the right mathematical aggregation rule is still an open one. The majority of authors claim that net present value is a superior method and thus it is the one to be always used. Other authors try to show that various aggregation methods, under specific conditions, arrive at the same recommendation. An exceptional case is the field of education economics where the internal rate of return is widely used.FindingsThis paper offers a survey of this controversial topic which focuses on some clear cut formal properties of the various aggregation methods and considers the empirical characteristics of the different fields of application. Its main conclusion is that no “correct” aggregation rule, always applicable in all decision frameworks, can exist.Originality/valueIts main objective is to supply clear guidelines to orient practitioners and help the teaching on this topic. Its main conclusion is that no “correct” aggregation rule, always applicable in all decision frameworks, can exist. On the contrary, even if one restricts her/himself to a particular class of investments, often no clear-cut selection can be made.
Databáze: OpenAIRE