Agency theory predicts that the Chief Executive Officer (CEO) and the chairman positions should be held by different individuals in order to protect shareholder's interest. Though there are mixed evidences on CEO duality and firm performance, most research have found that there is negative relationship between CEO duality and firm performance. Although, in the last decades of the twentieth century, agency theory became the dominant force in the theoretical understanding of corporate governance, it does not however cover all aspects of corporate governance. This paper aims to explore whether it is better to combine various theories in order to describe effective and good corporate governance or theorizing corporate governance based on one theory only. This will cover corporate governance theories which include agency theory, stakeholder theory, stewardship theory, and institutional theory.

Malaysia is a developing economy which is one of the corporate leaders in South East Asian countries. Practicing audit committee is mandatory for public listed firms in Malaysia according to Bursa Malaysia Listing Requirements as well Malaysian Code of Corporate Governance. The purpose of this paper is to examine the association between audit committee characteristics and firm performance among public listed firms in Malaysia. This study employed EVA as performance measurement tool. The sample is 75 firm year observations and covers fiscal years 2008-2010. The study found that audit committee independence is positively associated with firm performance while audit quality is negatively associated in Malaysia. Overall, audit committee characteristics have a positive effect on firm performance. This study contributes to the literature as well as in empirical evidence on audit committee characteristics and firm audit quality. The results suggest that Big 4 firms have a negative impact on value based measure in Malaysia.