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This chapter examines interlocks among the governing boards of 12 leading policy-planning organizations and changes in the structure of this network between 1973 and 2000. Methods of multidimensional scaling and hierarchical clustering are used to construct topographical maps of the pattern of interlocks among policy-planning groups and their change over time. In contrast to the findings on corporate interlocking directorates, the study shows that board interlocks among policy-planning organizations are substantively meaningful and relatively stable at the dyadic level, although several changes in the topology of the network are also found. In all three decades, big-business “moderate-conservatives” like the Business Council and the Business Roundtable occupied the most central locations in the network. In the 1970s these organizations were linked with the “corporate liberals” to form the core cluster of the policy network. In the 1980s and 1990s the corporate liberals became relatively isolated from the core and their places were taken by several conservative groups. There was also a sharp rise in the cohesion of the network in the late 1970s and 1980s – a period that is widely seen as one of conservative political mobilization and heightened political unity among business elites. These changes in the structure of the policy network are consistent with and help to account for the rightward shift in U.S. state policy during this period.

This paper aims to explore the effect of interlocking directorates on agency conflicts and corporate performance in the shipping industry.

The authors use social network analysis to discover central nodes in the network of personal and corporate connections in an international sample of 110 listed shipping companies.

Assessing network structure, the authors find that the network of corporate leaders is denser than the network of shipping companies. The network of shipping companies is populated with many isolated nodes; the network of shipping executives and directors is populated with many cohesive groups in which the longest distance between two corporate leaders is two companies. The authors find that interlocking corporate leadership can help resolve agency conflicts in the shipping industry, bearing a negative effect on the magnitude of agency costs. The extent of leadership overlaps is associated with board size, financial leverage and profitability. The relationship between profits and interlocks is bidirectional, implying that interlocking directorates bear a positive effect on asset returns.

The authors map the relational structures in the social networks of companies and company leaders in the shipping industry and discover the cross-sectional determinants of interlocks in the shipping industry. The finding about the effect of interlocks on profitability and agency costs bears policy implications for the design of corporate governance in the shipping industry.

This study aims to examine the effects of competing influences emanating from firms’ social structural context (i.e. sent and received board of director interlocks and industry peers) on the adoption of an institutionally contested corporate governance code provision.

The corporate governance code provision of interest in this research recommends that German firms listed on German stock exchanges should disclose the individual remuneration arrangements for their board members. This paper uses 945 firm year observations from 2002 to 2006, the time period during which the adoption of this provision was voluntary for firms, to examine the role of firms’ social structural context in the legitimization process of this provision.

The results show that sent board interlocks to firms that defy pressures to adopt this practice have an equally pronounced but opposing effect on its institutionalization process. Received interlocks are inconsequential in this process. The results also provide evidence for the existence of competing influences emanating from firms’ industry peers. In contrast to the effects associated with sent board interlocks, at the industry level, peer acquiescence has a more pronounced effect than peer defiance. Furthermore, the practice’s legitimacy among firms’ peers moderates the effects of sent board interlocks.

The results of this paper suggest that a balanced approach to studying institutional change in corporate governance needs to acknowledge the co-existence of conflicting signals regarding the spread of new institutional models. The findings suggest that firms’ social structural context plays a central role in processes of contested institutional change. Board interlocks and industry peers carry the potential to facilitate institutional change and facilitate institutional continuity and resistance to change. However, not all board interlocks are of equal importance, and industry peers constitute a source of legitimacy to which directors forming the interlocks attend.

The role that corporations play in environmental and social sustainability has become increasingly important due to their size and embeddedness in our everyday lives. This study aims to examine the relationship between corporate social responsibility (CSR) and corporate interlocks for the Fortune 500 companies.

To collect data, various sources were used including data web scraped from US Securities and Exchange Commission, Bloomberg ESG, ASSET4, Carbon Disclosure Project and data from each companies’ websites. To measure CSR, this paper uses an original United Nations Sustainable Development Goals (SDG) index, and to measure corporate interlocks, it uses the Bonacich centrality score and has a sample of 401 companies. To account for missing data, Bayesian multiple imputation was used. For the final analysis, linear regression analysis was conducted, for which all the assumptions are met.

The findings show that for most SDGs, corporate interlocks is an important predictor, but not for all SDGs. In other words, they indicate that corporate centrality remains to be an important variable in most aspects of CSR, but a more nuanced approach is required.

This paper uses the SDGs to provide a granular perspective of CSR, which is stronger and more methodologically rigorous compared to the existing metrics of CSR. Consequently, it provides an original insight into the corporate interlocks literature, which has not been empirically researched using granular CSR data.

The purpose of this paper is to investigate whether a pattern of interlocking directorates is emerging following reforms in Mexican corporations, and who, if any, are the powerful actors in this network. Drawing on the Bourdieusian notion of social capital, the paper also analyses theoretically the interlocking directorates, networks and powerful actors, and their influences on and potential implications for corporate governance mechanisms.

The data used in the study consisted of 1,442 internal and external board members of the population of 126 Mexican corporations trading on the Mexican Stock Market as of January 2011. Use of social network analysis (SNA) demonstrates individuals’ links with corporations and allows the production of spatial maps to visualise the network structure of interlocking boards.

Using the measures of SNA developed by Freeman (1979 and Bonacich (1972), the authors identify the most powerful and influential directors in the network structure of board members in Mexico. Board members with the greatest number of connections occupy central positions in the network. The authors also find a catalogue of corporate governance scandals. The inclusion of independent directors seems to have had no influence in ensuring better corporate governance.

Mapping out the directors’ links might offer excellent opportunities for policy makers to see how many companies a single director represents, how they share boards, and the implications for minority shareholders of sharing boards, and to understand the workloads of directors in carrying out the monitoring tasks expected of them.

This paper makes an important contribution by employing SNA to illustrate interlocking directorates and the positions of powerful and influential actors. Examining networks of directors from a “social capital” point of view also provides an understanding of why the role of independent directors remains toothless in family-dominated corporations.

It has been over 20 years since the landmark publication of Mizruchi (1996) and his examination of “what do interlocks do?”. Since then, the nature of interlocks and subsequent research on the subject has evolved. This paper aims to revisit the literature on interlocking directorates through a quantitative bibliometric analysis.

This study undertakes a bibliometric analysis of literature citing the Mizruchi (1996) to examine the state of research following up on “what do interlocks do”. This study examines 718 publications using keyword and co-word analysis, along with a thematic analysis to revisit the research that has followed Mizruchi’s topic of what do interlocks do.

This study finds that the topics of the corporate elite, capitalist economy and corporate governance have remained prominent themes in the field. Research areas that are emerging in the field of interlocking directorates include gender diversity, globalisation and advancing theoretical frameworks.

This paper provides a quantitative bibliometric analysis to revisit the extant literature on “what do interlocks do”, examining a high number of articles to identify areas which could be developed to advance research in the field.

Recent theory and research suggests that local relational networks among business organizations play an important role in establishing and preserving a locale's identity. Such networks facilitate the development, dissemination, and enforcement of norms and cognitive frames that guide local business behavior. They also provide a vehicle for the consolidation of local business interests and for the coordination of local business strategic action. We examine the factors that influenced the likelihood that the CEOs of large corporations sat on the board of directors of large locally headquartered commercial banks in the 1960s. We focused on the 1960s because doing so allows us to make use of an exceptional comprehensive data set on the attributes and relationships of large firms and their leaders. We examine connections to commercial banks because these banks played a crucial role in community development in the 1960s. We find that both the class attributes of corporate CEOs (as reflected in their ownership of the firm and their affiliation with elite educational, social, and policy-making institutions) and the organizational attributes of their firms (as reflected in their financial structure, geographic reach, and age) influenced a CEO's propensity to sit on the board of a locally headquartered bank. These results suggest that future research on participation in local relational networks should take into account both class and organizational theories. They also suggest that future research on the class and organizational underpinnings of relational networks should pay closer attention to spatial relations.

This paper explores the relationship between board interlocks and firm outcomes by reviewing the most recent peer-reviewed articles examining this research theme.

A systematic and bibliometric methodology of assessing 369 peer-reviewed articles from the Web of Science (WoS) database was applied. The study also leverages key R-packages litsearchr and Bibliometrix software to enhance the descriptive and thematic literature analysis to identify gaps and opportunities for new research.

This study confirms a rapid increase in articles on this thematic area, over the last decade, with increasing collaboration occurring among researchers in the United States, Europe, China, South Korea and India. Four core research clusters are identified. The first and largest cluster links interlocked directors to issues related to corporate governance and firm outcomes. The second cluster links social network theory, interlocking directorates and firm outcomes. Smaller emerging research clusters include topics related to ownership structure, board size, political connectedness and impacts on firm outcomes. The final cluster examines the influence of board interlocks on market value and firm innovation.

Interlocked directors can have both positive and negative impacts on a wide variety of firm outcomes. This study places great interest in the selection of new directors, ensuring that the selection has aligned with the needs and interests of the company and disclosures of potential competing interests are declared and considered. Equally important are the governance practices used to monitor directors' behavior and to protect the interest of shareholders and the firm. This is particularly relevant in the internal appointment of interlocked directors to critical positions, such as audit committees or instances where interlocked directors may simultaneously hold CEO or executive leadership positions in other companies.

This paper examines the board interlocks literature related to firm outcomes. Additionally, this review identifies several topics and disciplines which, if pursued, could enrich the literature and promise new avenues for future research.

We study the spatial diffusion of stock backdating, an instance of corporate misconduct about which public information was virtually absent until 2005. Contrary to the findings of Bizjack, Lemmon, and Whitby (2009), our results reveal that this “invisible” practice did not diffuse through board interlocks. Rather, stock backdating spread through geographic proximity: firms were more likely to backdate stock options to the extent that other firms located geographically close to them had done so. Lending support to the importance of localized interactions among members of the local business elite, the effect of geographical proximity was conditional on high levels of local board interlocks. Our findings regarding the differential impact of geographic proximity and board interlocks on the diffusion of this invisible practice are analogous to the diffusion pattern of controversial practices proposed by Davis and Greve (1997).

One of the most active areas of study in the field of corporate governance, board interlocks is a phenomenon that is both pervasive and perplexing. This paper aims to examine and integrate the empirical research on board interlocks to fill the void left by the lack of a recent review.

The bibliometric analysis methodology, which emphasizes methodological rigor and transparency, was used to analyze the board interlocks literature. Eighty publications published since 2000 were chosen as the subject of this research because they reveal the key contributions to the field of board interlocks. Additionally, their clustering pattern is also identified.

The authors classify various studies conducted on board interlocks into three clusters: “Social Capitalization”, “Antecedents and Outcomes” and “Corporate Governance”.

This literature review helps better comprehend the board interlocks literature by pointing out several areas of study that, if pursued, would add to the existing body of knowledge and open future research directions.