Intellectual capital vs the book-value of assets : A value-relevance comparison based on productivity measures

Purpose – The purpose of this paper is to provide new evidence, made possible by human capital data that became available after IFRS adoption, on the productivity of intellectual capital and its components. These productivity measures are modelled to determine their value-relevance in the share market, and the modelling is extended to comparative productivity measures for the book-value of assets. Design/methodology/approach – Financial data are sourced from financial databases and company annual reports on a sample of 160 Australian listed firms over a five-year period. Panel regression analysis is used to test five models built from Riahi-Belkaoui's (1999) general price model of the value-relevance of accounting numbers. Findings – The results show that the productivity of human capital, structural capital and intellectual capital are each significantly positively related to share price (i.e. have value-relevance), whereas the productivity of total assets at book-value is non-significant and tangible assets is inversely significant. Originality/value – This study constructs a new improved method of computing the amount of structural capital, and uses recently available financial statement data to provide first-time evidence on human capital and its inclusion in the determination of the amount of intellectual capital. These new models and data enable a direct comparison to be made between the value-relevance of intellectual and the book-value of assets.