Abstract
The debate regarding the determinants of persistent abnormal profits is re-examined using a new approach to the measurement of profits which explicitly accounts for intangible capital. Abnormal profits are estimated using data on tangible and intangible capital for 2800 Australian firms over a 18-year period. The determinants of abnormal profits are then estimated using variables collated from separate accounting and administrative company records data as well as an in-house survey of innovation and management practices. Our results imply that firm-specific factors relating to efficiency and strategy are much larger than the industry-specific effects of collusion
Published Version
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