Purpose: This study aims to explore the corporate social responsibility disclosure (CSRD) practices of the Islamic banks in the Gulf Cooperation Council (GCC) countries during the period 2010-2014 and examines the determinants of CSRD and its effects on firm value.Design/methodology/approach: Based on the Accounting and Auditing Organization for Islamic Financial Institutions Governance Standard No. 7 guidelines and using content analysis, the paper develops a comprehensive CSRD index for GCC Islamic banks. The study applies ordinary least squares regression analysis for hypothesis testing and for finding determinants of respective dependent variables.Findings: The results show a very low level of CSRD among the sample Islamic banks in GCC countries. When using corporate governance characteristics to examine the determinants of CSRD, this study provides evidence of a significant positive association between board size and CSRD practice in Islamic banks and a significant negative relationship of chief executive officer (CEO) duality with CSRD, as per expectation. For the economic consequences of CSRD, the study documents an inverse performance effect of CSRD while board size, board composition and CEO duality indicate significant positive effects on firm value.Research limitations/implications: The relatively small sample size of GCC Islamic banks may limit the application of the findings to other Islamic financial institutions such as Takaful and the Islamic unit trust company.Practical implications: The findings of this study initiate the global debate on the need for corporate governance reform in Islamic banks by providing insights on the role played by corporate governance mechanisms in encouraging and enhancing CSRD practices among Islamic banks. The findings also have important implications for investors, managers, regulatory bodies, policymakers and Islamic banks in the GCC countries.Social implications: The results of the study do not support the idea that Islamic banks operating on Islamic principles can meet their social responsibilities through promoting corporate social responsibility (CSR) activities and by differentiating themselves from non-Islamic banks.Originality/value: This is the first study to examine the determinants of CSRD in GCC Islamic banks using comprehensive CSRD and corporate governance variables and, therefore, adds value to the existing CSR literature in banking.

Purpose: This study aims to investigate the effects of corporate board and audit committee characteristics and ownership structures on market-based financial performance of listed firms in Thailand.Design/methodology/approach: It applies system GMM (generalized method of moments) as the baseline estimator approach, and ordinary least squares and fixed effects for robustness checks on a sample of 452 firms listed on the Thai Stock Exchange for the period 2000-2016.Findings: Relying mainly on the system GMM estimator, the empirical results indicate some emerging trends in the Thai economy. Contrary to expectations for an emerging market and prior research findings, ownership structures, particularly ownership concentration and family ownership, appear to have no significant influence on market-based firm performance, while managerial ownership exerts a positive effect on performance. Moreover, as expected, board structure variables such as board independence; size; meeting and dual role; and audit committee meeting show significant explanatory power on market-based firm performance in Thai firms.Practical implications: These findings are important for policymakers in constructing an appropriate set of governance mechanisms in an emerging market context, and for corporate entities and investors in shaping their understanding of corporate governance in the Thai institutional context.Originality/value: Unlike previous literature on the Thai market, this study is the first to use the more advanced econometric method known as system GMM estimator for addressing causality/endogeneity issues in governance–performance relationships. The findings indicate new trends in the explanatory power of ownership structure variables on market-based firm performance in Thai-listed firms.