The intellectual capital is defined as intangible critical assets, which cannot precisely be disclosed in the financial
statement of a company but reflect the real value of the company and are based on knowledge (Yıldız, 2010b, p.31).
According to Roos et al. (1998), considering the modern accounting techniques, the intellectual capital includes the
processes that are not disclosed in the financial statement and intangible assets (copyright, patent, trademark).
According to Sullivan (1999), on the other hand, the intellectual capital is information that could be converted into
profit.