Efficiency versus collusion: a reformulation of the Weiss test

Autor:	Kenneth R. Stollery, Stanley W. Kardasz
Rok vydání:	1995
Předmět:	Microeconomics Oligopoly Economics and Econometrics Negative coefficient Collusion Economics Profitability index Sample (statistics) Test (assessment)
Zdroj:	Applied Economics. 27:539-545
ISSN:	1466-4283 0003-6846
DOI:	10.1080/00036849500000142
Popis:	The weiss test has been used to discriminate between the efficiency and collusion hypotheses. Using a conventional oligopoly model, we show that the test is valid for the former hypothesis but not the latter. Contrary to recent emperical studies, we find that a negative coefficient on concentration in profitability equations does not refute the collusion hypothesis. In fact, this finding supports the hypothesis if the sample is dominated by small firms.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::87166bca4156b9ea6e458183677990ae https://doi.org/10.1080/00036849500000142 Zobrazit plný text záznamu Plný text ve formátu PDF