The Voluntary Disclosure of Intellectual Capital: A Longitudinal Study from Public Firms in Indonesia

The purpose of this study is to examine the determinants of the voluntary disclosure of Intellectual Capital (IC) of public companies in Indonesia in the long term. Longitudinal studies were conducted over the past ten years from the years 2002-2011. The data were used, namely in 2011, 2008, 2005, and 2002. Samples of one hundred largest market capitalization company in 2011 were traced to ten years back. Analysis tool used is E views 7. The software uses a least squares estimation of the parameters pooled specifically designed for panel data.The results of analysis testing on observations in 2002, 2005, 2008, 2011, and the panel data were found the voluntary disclosure of IC to be influenced by firm size, industry type, and auditor reputation consistently at each observation. Inconsistent results were obtained by using the variable debt levels, ownership concentration, firm age, and profitability. The results of this analysis are expected to motivate the public company in Indonesia to do more voluntary disclosure of IC and encourage regulators to make regulations in a comprehensive manner so that all categories of IC must be disclosed by the company. Keywords: determinants of voluntary disclosure of IC, longitudinal stud