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PurposeA very few studies have been conducted to measure a degree of national intellectual capital for selected groups of countries. This paper is conducted to construct a new index of national intellectual capital (INIC) which is simple, quantifiable, relevant and comparable for countries around the globe.Design/methodology/approachThe styudy’s new INIC uses various indicators which are proxies for fundamental aspects of intellectual capital, including (1) human capital, (2) structural capital and (3) relational capital. These indicators are publicly available for many countries. The principal component analysis is utilized to derive the INIC. Various tests have also been conducted to ensure that the new index is appropriate and fit for purpose.FindingsFindings from this paper confirm that the new INIC has a strong correlation of 0.80 with an index developed by Lin et al. (2014) (the LECB index), an advanced INIC to date. The LECB index has been infrequently updated and covered selected countries due to data and information unavailability. In addition, the study’s tests indicate that a high correlation of 0.75 is observed between the study’s index and GDP per capita. The new INIC represents an advancement in relation to its simplicity, quantification, relevance and international comparison across nations.Practical implicationsThe estimates of national intellectual capital using the approach in this study will open a new strand of theoretical and empirical studies in relation to national intellectual capital and other economic and social issues of interests. This novel and innovative approach will provide policymakers with a valuable framework to formulate and implement relevant policies to enhance and improve national intellectual capital.Originality/valueTo the best knowledge of the authors, this is the first study of its type, which is conducted to measure national intellectual capital based on publicly available data. Required data cover an extended period of years and a majority of countries. As such, an INIC will enhance transparency and feasibility for international comparison across countries.

PurposeIn developed countries, banks are perceived to accumulate a higher level of intellectual capital than firms in other sectors. However, this perception has not been considered or tested in the context of an emerging market such as Vietnam, which has one of the most dynamic economies in the Asian region. This study estimates and compares the level of accumulation of intellectual capital and its four components by financial and nonfinancial firms in Vietnam. Furthermore, this study examines the relationship between intellectual capital and its components and the performance of financial and nonfinancial firms.Design/methodology/approachThis study uses data collected from the annual reports of 75 financial and 75 nonfinancial firms in Vietnam from 2011 to 2018. A modified value-added intellectual coefficient model is adopted to measure the level of intellectual capital at firms. Various aspects of intellectual capital are considered, including the efficiency of human capital, structural capital, capital employed and relational capital. In addition, the generalized method of moments is used to ensure the robustness of the findings.FindingsFindings in this study indicate that financial firms in Vietnam have accumulated a higher level of intellectual capital than nonfinancial firms. In addition, intellectual capital contributes positively to financial firms' performance. Three components of intellectual capital – structural capital efficiency, capital employed efficiency and relational capital efficiency – positively affect performance by financial firms.Research limitations/implicationsThis study is limited to financial and nonfinancial firms in Vietnam. Empirical studies in the future should incorporate the efficiency aspects of these types of firms because different industries might have different characteristics, in particular, their current efficiency level, which might cause differences in relation to the accumulation of intellectual capital.Practical implicationsThe findings of this study provide valuable evidence and implications for executives and policymakers in creating, managing and enhancing intellectual capital within the Vietnamese context, in particular in the financial sector.Originality/valueTo the best of our knowledge, this is the first empirical study conducted in the context of Vietnam, with the following two objectives: (1) to measure and compare the level of accumulation of intellectual capital by financial and nonfinancial firms in Vietnam; and (2) to examine the contribution of intellectual capital and its components to the performance by financial and nonfinancial firms in Vietnam.

Purpose This paper aims to examine the relationship between corporate governance and intellectual capital in the context of Vietnam. In this paper, corporate governance is proxied by various characteristics, including board size, a number of independent members in the board, board remuneration, major shareholder holding more than 20 per cent of the outstanding shares and duality of the CEO. In addition, intellectual capital is measured using the modified value-added intellectual coefficient model (MVAIC). Design/methodology/approach The study uses data of 45 Vietnamese listed firms during 2011-2018. The MVAIC model is used incorporating four components, namely, human capital, structural capital, capital used and relational capital. In addition, GMM regression technique is used in this paper. Findings Empirical findings from this paper indicate that key characteristics of corporate governance, except for board remuneration, may provide a negative effect on the efficient use of intellectual capital. Research limitations/implications Intellectual capital emerges as a new field of research that has not been widely examined in emerging countries such as Vietnam. As such, there have not been many studies focusing on understanding intellectual capital and its role in the performance of enterprises. Further studies can evaluate the relationship between intellectual capital and corporate performance, capital structure, corporate value and social responsibility. This study is limited to listed companies in Vietnam because of data limitations in an emerging market. Studies in the future should extend the sample and/or compare differences between manufacturing enterprises and financial institutions, or between countries. Practical implications Findings from this paper provide a valuable framework for executives, managers and policymakers in managing corporate governance and intellectual capital within the Vietnamese context. Originality/value To the best of the authors’ knowledge, this is the first empirical study that has been conducted to examine the relationship between corporate governance and intellectual capital in the context of Vietnam.

Income inequality in many middle-income countries has increased at an alarming level. While the time series relationship between income inequality and economic growth has been extensively investigated, the causal and dynamic link between them, particularly for the middle-income countries, has been largely ignored in the current literature. This study was conducted to fill in this gap on two different samples for the period from 1960 to 2014: (i) a full sample of 158 countries; and (ii) a sample of 86 middle-income countries. The Granger causality test and a system generalized method of moments (GMM) are utilized in this study. The findings from this study indicate that causality is found from economic growth to income inequality and vice versa in both samples of countries. In addition, this study also finds that income inequality contributes negatively to the economic growth in the middle-income countries in the research period.