Breaks with the prior literature on intellectual capital disclosure practices in two major ways. First, provides a longitudinal examination of intellectual capital disclosure practices in the annual reports of 31 FTSE 100 listed companies from 1996-2000. Second, investigates the relationship
between intellectual capital performance and the extent of intellectual capital disclosure. Between 1996 and 2000 the quantity of intellectual capital disclosure increased. Empirical findings did not indicate a systematic relationship between intellectual capital performance and the quantity
of disclosure during the survey period. Results, however, suggest that if intellectual capital performance is too high the amount of disclosure is reduced. This negative association may support the suggestion that firms reduce intellectual capital disclosures when performance reaches a threshold
level for fear of competitive advantage being lost. Leverage, industry exposure and listing status was also found to have an influence on the quantity of disclosure.