defined in terms of this market as the following firms: Arthur Andersen & Co. (AA), Arthur Young (AY), Coopers & Lybrand (CL), Deloitte Haskins & Sells (DHS), Ernst & Whinney (EW), Peat, Marwick, Mitchell & Co. (PMM), Price Waterhouse & Co. (PW), and Touche Ross (TR). 2 Simunic [1980] used two indicator variables, one for PW auditees and one for the remaining seven (B7) audit firms' clients. In regressions considering differences in the substitution of auditee for auditor inputs, coefficients for the B7…
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