Doctoral programs at U.S. universities play a critical role in the development of human resources both in the United States and abroad. This volume reports the results of an extensive study of U.S. research-doctorate programs in five broad fields: physical sciences and mathematics, engineering, social and behavioral sciences, biological sciences, and the humanities. Research-Doctorate Programs in the United States documents changes that have taken place in the size, structure, and quality of doctoral education since the widely used 1982 editions. (...) This update provides selected information on nearly 4,000 doctoral programs in 41 subdisciplines at 274 doctorate-granting institutions. This volume also reports the results of the National Survey of Graduate Faculty, which polled a sample of faculty for their views on the scholarly quality of program faculty and the effectiveness of doctoral programs in preparing research scholars/scientists. This much-anticipated update of such an essential reference will be useful to education administrators, university faculty, and students seeking authoritative information on doctoral programs. (shrink)

The quality of doctoral-level chemistry (N=145), computer science (N=58), geoscience (N=91), mathematics (N=115), physics (N=123), and statistics/biostatistics (N=64) programs at United States universities was assessed, using 16 measures. These measures focused on variables related to: program size; characteristics of graduates; reputational factors (scholarly quality of faculty, effectiveness of programs in educating research scholars/scientists, improvement in program quality during the last 5 years); university library size; research support; and publication records. Chapter I discusses prior attempts to assess quality in (...) graduate education, development of the study plans, and the selection of disciplines and programs to be evaluated. Chapter II discusses the methodology used, focusing on each of the assessment measures. Chapters III to VIII present, respectively, findings from the analyses of the chemistry, computer science, geoscience, mathematics, physics, and statistics/biostatistics programs. Chapter IX includes a summary of results, correlations among measures, several additional analyses, and suggestions for future studies. Among the findings reported are those indicating that mathematics programs had, on the average, the largest number of faculty (N=33) in December 1980 followed closely by physics (N=28) and chemistry (N=23), and that 80 percent of computer science students had job commitments by graduation. (Survey instruments and supporting documentation are included in appendices.) (JN). (shrink)

The quality of doctoral-level biochemistry (N=139), botany (N=83), cellular/molecular biology (N=89), microbiology (N=134), physiology (N=101), and zoology (N=70) programs at United States universities was assessed, using 16 measures. These measures focused on variables related to: (1) program size; (2) characteristics of graduates; (3) reputational factors (scholarly quality of faculty, effectiveness of programs in educating research scholars/scientists, improvement in program quality during the last 5 years); (4) university library size; (5) research support; and (6) publication records. Chapter I discusses (...) prior attempts to assess quality in graduate education, development of the study plans, and the selection of disciplines and programs to be evaluated. Chapter II discusses the methodology used, focusing on each of the assessment measures. Chapters III to VIII present, respectively, findings from the analyses of the biochemistry, botany, cellular/molecular biology, microbiology, physiology, and zoology programs. Chapter IX includes a summary of results, correlations among measures, several additional analyses, and suggestions for future studies. Among the findings reported are those indicating that cellular/molecular biology programs had, on the average, the largest number of faculty and that students in cellular/molecular biology, biology, biochemistry, microbiology, and physiology received a relatively high fraction of financial support. (Survey instruments and supporting documentation are included in appendices.) (JN). (shrink)

This study investigates how board size and occupational background of directors differentially influence social performance in for-profit and non-profit organizations. Using data from California hospitals, we develop a quantitative measure of social performance and provide the following empirical evidence. First, board size is negatively (positively) associated with social performance in for-profit (non-profit) hospitals. Second, the presence of government officials on the board is negatively (positively) related to social performance in for-profit (non-profit) hospitals. Third, representation of (...) physicians on the board is positively associated with social performance in for-profit hospitals, whereas their presence is not significantly related to social performance in non-profit hospitals. Our findings highlight the different effects of governance mechanisms on social performance in for-profit and non-profit organizations. (shrink)

This paper investigates the relationships among board gender diversity, firm performance, and firm size. Our paper provides new insights into the relationship between board gender diversity and firm performance by examining whether firm size alters the impact of board gender diversity on firm performance. We use a panel data from A‐share‐listed non‐financial firms in China to examine the relationship during the period of 2007–2012. Our finding demonstrates that the gender diversity on the board has (...) a positive impact on firm performance if and only if the value of firm size is less than some critical value. In addition, we also find that firm size may undermine the positive impact of board gender diversity on firm performance. This paper contributes to the literature by offering a contingency approach to examine the relationship between board gender diversity and firm performance as well as shedding light on the relationship in the context of a developing economy. (shrink)

Corporate governance concerns, discussions and developments have been largely concerned with listed companies and situations in which there is a clear separation of ownership and control. This article examines the relevance of corporate governance to the worlds of smaller companies, family businesses and owner directors. It reports some preliminary findings of an examination of the governance of 60 unlisted SMEs based in the East of England which took place during 2005 and 2006. After assessing the value being added by the (...) directors and boards encountered and the contribution effective boards could make to the growth and development of SMEs, it considers the implications of the findings and areas for further research. (shrink)

Boards of directors affect corporate strategy and decision-making through monitoring of management and resource provision. Recently, an increasing number of studies have examined the relationships between board characteristics and corporate social responsibility (CSR). These studies have yielded inconsistent findings. This article therefore reports the results of a study applying meta-analytical techniques to a sample of 82 empirical studies to help clarify the relationships between board characteristics and CSR. Although prior research has tended to apply relatively simplistic models investigating (...) the impact of individual board characteristics independently and only directly, we adopt a more complex perspective to shed new light on the board characteristics–CSR nexus. Specifically, we use a meta-analytic path model that accounts for the potential interplay between board characteristics in determining CSR and tests whether the presence of a CSR committee plays a meditating role. Our findings suggest that board size, board independence, and female board representation are partially interrelated with each other and jointly influence CSR directly as well as indirectly via the presence of a CSR committee. In addition, we find that country-level institutional factors act as moderators and that the relationships differ with regard to the specific dimension of CSR (i.e., social, environmental, or aggregate). (shrink)

This paper investigates the association between board characteristics and the company’s corporate social responsibility assurance decision in China. By examining 2054 firm-years of Chinese listed companies with CSR reports from 2008 to 2012, we find that firms with a large board size, more female directors, and separation of CEO and chairman positions are more likely to engage in CSR assurance. Gender diversity also influences the CSR assurance provider choice. However, board independence and overseas background of the (...) CEO do not affect the CSR assurance decision. Inconsistent with our prediction, firms with foreign directors are less likely to engage in voluntary CSR assurance. In summary, this research provides in-depth insights into the determinants of Chinese firms’ voluntary CSR assurance. (shrink)

Does the board of directors influence cost of debt financing? This study of a sample of Spanish listed companies during the period 2004-2007 provides some evidence about the question. The results suggest that two board attributes - director ownership and board activity - appear to influence in the risk assessment of debtholders because of their ability to reduce agency cost and information asymmetry. We also find a non-linear relationship between board size and cost of debt, (...) suggesting that from certain levels the benefits of large boards may be outweighed by the cost of poorer communication and increased decision-making time. (shrink)

This study aims at analyzing the board structure and its impact on firm performance in the context of an emerging economy, Turkey. Emerging economies are characterised by poorly-developed legal systems, under-developed markets for corporate control and concentrated ownership structures. This context is expected to have an impact not only on the board structure but also on the relationship between board structure and firm performance. Drawing from agency, stewardship and resource dependence theories and emphasising the impact of the (...) societal context in line with macro institutional approaches, hypotheses are developed regarding the board structure/firm performance relationship. Findings tend to show that board structure does not have a significant impact on performance. (shrink)

This study aims at analyzing the board structure and its impact on firm performance in the context of an emerging economy, Turkey. Emerging economies are characterised by poorly-developed legal systems, under-developed markets for corporate control and concentrated ownership structures. This context is expected to have an impact not only on the board structure but also on the relationship between board structure and firm performance. Drawing from agency, stewardship and resource dependence theories and emphasising the impact of the (...) societal context in line with macro institutional approaches, hypotheses are developed regarding the board structure/firm performance relationship. Findings tend to show that board structure does not have a significant impact on performance. (shrink)

Business ethics is one of the most significant demands made by institutional and individual investors, who usually require the participation of the board of directors in the planning and implementation of ethical behaviour in corporations. This is done by drawing up an ethics code and then monitoring its fulfilment. This study has a dual objective: first, to analyse the role played by the composition of the board of directors, and by that we mean its independence and the diversity (...) of its members, on the implementation and scope of an EC, and, second, to detect whether the corporate governance system moderates the level of involvement of the board in ethical issues. The findings obtained from a data panel sample made up of 760 listed companies from 12 countries for the years 2003–2009 show that the largest companies with large-sized and diverse boards implement the most developed ECs. Nevertheless, the extent of involvement of the independent directors is conditioned by the level of shareholder orientation characteristic of the system of CG in the corporation’s country of origin. (shrink)

Background Institutional review board (IRB) expertise is necessarily limited by maintaining a manageable board size. IRBs are therefore permitted by regulation to rely on outside experts for review. However, little is known about whether, when, why, and how IRBs use outside experts.Methods We conducted a national survey of U.S. IRBs to characterize utilization of outside experts. Our study uses a descriptive, cross-sectional design to understand how IRBs engage with such experts and to identify areas where outside expertise (...) is most frequently requested.Results The survey response rate was 18.4%, with 55.4% of respondents reporting their institution’s IRB uses outside experts. Nearly all respondents who reported using outside experts indicated they do so less than once a month, but occasionally each year (95%). The most common method of identifying an outside expert was securing a previously known subject matter expert (83.3%). Most frequently, respondents sought consultation for scientific expertise not held by current members (69.6%). Almost all respondents whose IRBs had used outside experts reported an overall positive impact on the IRB review process (91.5%).Conclusions Just over half of the IRBs in our sample report use of outside experts; among them, outside experts were described as helpful, but their use was infrequent overall. Many IRBs report not relying on outside experts at all. This raises important questions about what type of engagement with outside experts should be viewed as optimal to promote the highest quality review. For example, few respondents sought assistance from a Community Advisory Board, which could address expertise gaps in community perspectives. Further exploration is needed to understand how to optimize IRB use of outside experts, including how to recognize when expertise is lacking, what barriers IRBs face in using outside experts, and perspectives on how outside expert review impacts IRB decision-making and review quality. (shrink)

In today's world, the corporate image of the largest companies is closely linked to their performance in the field of corporate social responsibility and the disclosure of information on that topic, specifically, on climate change. Since the Board of Directors is the body responsible for this process, the aim of this article is to show the role that companies' Boards of Directors play in the accountability process vis-à-vis stakeholders in relation to one specific aspect which has enormous significance in (...) environmental information: practices used to monitor greenhouse gas emissions. In order to achieve this, we shall verify certain business characteristics, in addition to the size and activity of the Board of Directors, and we shall take different dependence models into consideration. These models will include variables related to the level of independence and diversity of the Board of Directors, which interact with dummy variables representing the company's litigation risks regarding environmental behavior and the institutional macro-context of the organization's country of origin. The results make it clear that Boards of Directors are basically focused on the traditional responsibility of creating economic value, instead of dealing with today's broader business world concepts, which include social responsibility. This focus, therefore, does not favor the accountability process before other stakeholders, if this makes it more difficult to protect the interests of shareholders. (shrink)

This paper examines the association between board characteristics and the ethical reputation of financial institutions. Given the pivotal governance role of the board of directors and the value-relevance of ethical corporate behavior, we postulate a positive relationship between ethical reputation and board features that foster more effective monitoring and oversight. Using a sample of large financial institutions from 13 different countries, we run several alternative panel regressions of ethical reputation on board characteristics and firm-specific controls. Our (...) results demonstrate that the ethical reputation of financial institutions is positively associated with board size, gender diversity, and CEO duality, while being negatively related to the busyness of the board members and a composite index reflecting poor monitoring. Nevertheless, inconsistent with our hypothesis, we also document that financial institutions with less frequent board meetings have better ethical reputation. Overall, our empirical findings suggest that stronger board oversight may promote ethical behavior in the financial industry. (shrink)

The current literature shows great interest in the issue of gender diversity on boards of directors. Some studies have hypothesized a direct relationship between diversity and the value of the firm, but not many examine the intermediate mechanisms that may exert an influence on such relationships. We employ two stages of GMM estimation methodology to exhibit evidences of the relationship between gender diversity and compensation of top managers in the Spanish context. Results show that gender diversity positively affects the effectiveness (...) of boards—in terms of composition, structure, size and functioning—influencing a proper design of top managers compensation linked to company performance. Evidences suggest that legislative actions aimed at increasing the presence of women on boards of directors are justified not only for ethical reasons, but also for reasons of economic efficiency. (shrink)

In this article, we examine the factors determining the representation of women on boards of directors by considering three main questions. The first question deals with the relationship between characteristics of ownership and governance on one side, and female directorship on the other. The second major question concerns the demographic attributes of women directors, such as nationality, foreign experience, educational level, business expertise, and connections to external sources. The third important question refers to women in senior positions on French boards (...) (e.g., as independent members or board subcommittee members) in relation to firm characteristics and women’s demographic attributes. Our study focuses on French large- and mid-capitalized companies belonging to the SBF120 stock market index during a 5-year period running from 2000 to 2004. First, our results give evidence that the appointment of women directors is strongly related to family ownership and board or firm size. Second, the appointment of women directors is related to their professional services, valuable skills, and network links. Furthermore, we show that women face a double glass-ceiling problem, and note that French firms rely more on the demographic attributes of their women directors when they are appointed to senior board positions. Our study sheds light on issues concerning the law that comes into force in 2016, which imposes quotas of women members on boards of directors in French companies. (shrink)

This study examined the influence of the executive board of directors’ gender diversity on the financial performance of listed companies on the Bucharest Stock Exchange, for the period 2011 to 2019. The analysis of the composition and different characteristics of the board and the executive directors proved to be effective tools for corporate governance in countries with an emerging capital market. Therefore, a disclosure index on directors’ characteristics was used to moderate the interaction between gender diversity and financial (...) performance, based on the theoretical framework provided by upper echelon theory. The study contributes to the enrichment of the literature both by using the composite indicator built by applying the multiway PCA method on panel data to express financial performance and by designing the ten EGLS panel models involving five financial indicators and two proxies for gender diversity. The results showed that there is a positive impact of the proportion of women on the executive board of directors on financial performance, measured through the composite index, ROA, ROE, and SOL. A statistically significant impact of gender diversity on financial performance was found only for SOL, in the case of the Blau index. Also, using the random-effects model to perform the panel data analysis, the results showed that a higher executive board size can be associated with better financial performance measured through the composite index, ROA, ROE, and EPS. Practical implications are significant for the board of executives’ composition, the complexity of the relationship with the board, and reshaping governance practices. (shrink)

This study investigates the link between female board directors and company financial performance and agency costs in Sri Lanka's publicly listed companies. In order to investigate the impact of board gender diversity on firm financial performance, a dynamic panel generalised method of moment estimation is applied. Three variables are used as proxies for gender diversity of the board of directors, namely the percentage of women on the board, a dichotomous dummy and the Blau index. A Tobit (...) model with endogenous regressors is used to investigate the impact of female board members on agency cost, using growth opportunities as a measure of agency cost. After controlling for size, industry and other corporate governance measures, this study finds a significant negative relationship between the proportion of women on boards and firm value along with an increase in company agency cost. This evidence provides insights for governments and academic institutions in their efforts to provide resources that will help enhance women's leadership skills. (shrink)

Building on agency and resource-based view theories, this study investigates the level of environmental disclosure (ED) practices of family versus non-family firms and explores the moderating role of board gender diversity. We test our hypotheses on a 3-year (2018–2020) panel data sample comprising 324 observations of Italian small- and medium-sized enterprises traded on the Euronext Growth Milan. Findings show that, compared to non-family firms, companies with a family firm status are characterized by lower levels of ED. Gender diversity on (...) the board, however, moderates this relationship, reducing this gap, to the extent that the family firm status is associated with higher ED when the number of women directors is high enough to constitute a critical mass. We consequently contribute to the studies on family business, corporate governance, and corporate social responsibility. (shrink)

The current study looked at the impact of board of director characteristics on corporate social responsibility (CSR) in the Pakistani setting. The study further added to the body of knowledge by comparing the impact of board characteristics in family versus non-family businesses in an emerging market. The study’s sample consists of 139 non-financial Pakistan Stock Exchange (PSX) listed firms from 2008 to 2019. The level of CSR among sample firms was assessed using a multidimensional financial approach. The random-effect (...) model was employed to test the study’s hypotheses. The findings support the dysfunctional view of the role of the board of directors’ in family-owned businesses. Overall, board size and CEO duality have a significant negative impact on CSR, whereas board independence has a significant positive impact. While these findings applied to both family-owned and non-family-owned businesses. It was discovered that among family-owned businesses, boards tend to look after the interests of family members, and thus are less likely to support CSR. The findings of this study will assist regulatory authorities, investors, and financial analysts in understanding CSR practices in Pakistani firms, allowing them to review the role of the board of directors in CSR among family and non-family-owned firms. (shrink)

This study investigates the extent to which South African listed corporations voluntarily disclose information on black economic empowerment (BEE) in their annual and sustainability reports using a sample of 75 listed corporations from 2003 to 2009. BEE is a form of socio-economic affirmative action championed by the African National Congress (ANC)-led government to address historical imbalances in business participation and ownership in South Africa. We find that block ownership and institutional ownership are negatively associated with the extent of BEE disclosures, (...) whereas government ownership, board diversity (age, education, ethnicity, nationality and occupation), board size and non-executive directors are positively related to the extent of BEE disclosures. By contrast, dual board leadership structure and gender diversity are not significantly associated with BEE disclosures. Our results are robust when controlling for firm-level characteristics, fixed-effects and alternative disclosure proxies. Our results are largely consistent with the predictions of agency, legitimacy, resource dependence and stakeholder theories. (shrink)

Although we can observe noticeable progress in gender diversity on corporate boards, these boards remain far from gender balanced. Our paper builds on social identity theory to examine the impact of corporate elites—men and women who sit on multiple corporate boards—on board diversity. We extend the main argument of social identity theory concerning favouritism based on homophily by suggesting that boards with men with multiple appointments are unwilling to include female board members to protect the monopoly value generated (...) by their elite status. The empirical analysis, based on DAX 30 firms in the period of 2010–2015, shows that the presence of multi-board men is negatively associated with women’s participation, while the presence of multi-board women and other women on management boards is positively related to gender diversity on boards. Furthermore, robustness tests support and confirm our conclusion that multi-board men have a significant association with board diversity, even with small size. Additionally, we find a significant effect arising from pressure related to the introduction of gender quotas in Germany, effective in 2016, indicating the effectiveness of gender quota policies for board gender diversity. (shrink)

The article attempts to examine the impact of banks' specifics and board of directors' characteristics on directors' remuneration (REM) of 38 Indian listed banks from 2010 to 2019. The current study is based on secondary data that are extracted from the Prowess IQ database. Fixed effect model is used for analysing the data and generalised method of moment is applied for dealing with endogeneity problem. Finally, the sample is classified into three groups in order to check the robustness of (...) the results. Results revealed that return on assets, size, and market capitalisation positively and significantly impact directors' REM of Indian listed banks. While banks' age, capital adequacy, current ratio, and board of directors' composition have an insignificant impact on directors' REM of Indian listed banks. The findings of the study provide new evidence about the impact of banks' specifics and board of directors' characteristics on directors' REM in the Indian banking sector. The findings suggest that firms' specifics are significant determinants of directors' REM. (shrink)

Chinese listed companies have a two-tier governance structure that comprises a supervisory board/committee and the board of directors. However, as there is no hierarchical relationship between them, the two boards are independent. This is different from the governance mechanism in Continental Europe in which the SB appoints the directors of the management board; in this sense, the Chinese two-tier governance structure is unique. We investigate the impact of governance characteristics and ownership structure on gender diversity of both (...) the BoD and the SB for a sample of 892 Chinese Initial Public Offerings floated in both the Shanghai and Shenzhen Stock Exchanges. We find that the average proportion of female directors and female SB members on the BoD and the SB are 10 and 22 %, respectively. Using both static and dynamic panel data methods, we find that there is no significant impact of board structure on gender diversity in China. However, we find a positive and significant relationship between SB size and gender diversity. We also find that the higher the state ownership, the lower the female representation on both boards. Finally, our findings show that there is a bi-directional relationship between financial performance and the proportion of female directors sitting on the BoD. (shrink)

Prior research that analyses the cross-firm variation in the prevalence of women on corporate boards has tended to emphasise the importance of firm and industry-level factors, such as firm size, the quality of corporate governance, and the proximity to final consumers. In contrast, very little research has explored the role of national institutional factors for this important phenomenon. In this study, we explore the relative importance of country, industry, and firm-level factors in explaining the cross-firm variation in the proportion (...) of directorships occupied by female directors. Findings indicate that while all levels of influence are significant, country-level effects are a highly-important and under-researched antecedent of the presence of women on corporate boards. (shrink)

Clinical biobanks processing data of participants in the European Union fall under the scope of the General Data Protection Regulation, which among others includes requirements for consent. These requirements are further specified by the Article 29 Working Party —an EU advisory body currently known as the European Data Protection Board. Unfortunately, their guidance is cause for some confusion. While the GDPR allows participants to give broad consent for research when specific research purposes are still unknown, the WP29 guidelines suggest (...) that additional consent for specific uses should be obtained in addition to broad consent when this becomes applicable. This discrepancy elicits the question whether clinical biobanks can fail the requirement of consent if they obtain broad consent, but not a specific consent for each biomedical study. We analysed this discrepancy within the framework of contextual integrity, in order to describe the context-relative informational norms that govern information flows in clinical biobanks. However, our analysis demonstrates that there is no uniform set of norms that can be applied to all clinical biobanks. As such, neither the GDPR nor the WP29 guidance can act as a “one size fits all” approach to all clinical biobanks. Rather, differences between clinical biobanks—especially regarding the scientific aims and patient populations—make the case for context-relative norms that determine the appropriate type of consent. (shrink)

Prior research that analyses the cross-firm variation in the prevalence of women on corporate boards has tended to emphasise the importance of firm and industry-level factors, such as firm size, the quality of corporate governance, and the proximity to final consumers. In contrast, very little research has explored the role of national institutional factors for this important phenomenon. In this study, we explore the relative importance of country, industry, and firm-level factors in explaining the cross-firm variation in the proportion (...) of directorships occupied by female directors. Findings indicate that while all levels of influence are significant, country-level effects are a highly-important and under-researched antecedent of the presence of women on corporate boards. (shrink)

Because many institutions struggle to determine how best to support their institutional review board programs, we conducted an exploratory study to identify the individual, group, and institutional factors that may influence commitment to the role responsibilities of being on an IRB. We defined this commitment as consisting of time spent preparing for IRB meetings, views of the importance of serving on an IRB, time dedicated to IRB activities relative to other academic committee service, and willingness to attend IRB meetings. (...) Our study suggests that member commitment to IRB role responsibilities may be related to adequate compensation for time spent on IRB activities, serving on an IRB whose chair fosters a supportive group dynamic, IRB size, length of tenure, efficiency of protocol review, receiving training on the ethical and regulatory requirements for research with humans, and attendance of principal investigators at convened meetings. (shrink)

In spite of heralded progress in civil rights, this paper pessimistically maintains that blacks are systematically excluded from directorships on the boards of the major industrial companies in this country. The statistics derived from a 1980 survey, which yielded responses from 143 companies, show that blacks constituted only 1.9 percent of the entire directorate pool, with no black chairmen, no company with more than one black director, and significantly high multiple-board service on the part of a few black directors. (...) There is a strong correlation between size and importance of a company and black directorships, as well as between longer-range company commitments and white male directorships. There is discussion of answers from board members relating to constituency representation, philosophy regarding black recruitment and reasons for the paucity of black representation. After drawing a profile of typical boards, the study shows how the pool of individuals traditionally eligible to serve as directors virtually excludes blacks, confining them to rigid and narrow categories, and concludes that the "white club" remains white because it is insulated by an inflexible system whose inequity has been internalized and whose existence current directors would rather not acknowledge. While admitting the difficulty of discussing and even defining the existence of tokenism, the paper looks at the phenomenon of single-black-member boards, questioning the status, use and professions of some black directors. In the context of a climate that encourages governmental mandating of corporate responsibility, the authors suggest that corporate initiative wisely be generated toward achieving more equitable balances in the highest economic echelons where black impotence, given the present system, can neither be remedied nor tolerated much longer. (shrink)

Over the past 20 years or so, a small but growing literature has emerged with the aim of modeling agents who are unaware of certain things. In this paper we compare two different approaches to modeling unawareness: the object-based approach of Board and Chung (Object-based unawareness: theory and applications. University of Minnesota, Mimeo, 2008) and the subjective-state-space approach of Heifetz et al. (J Econ Theory 130: 78-94,2006). In particular, we show that subjectivestate-space models (henceforth HMS structures) can be embedded (...) within object-based models (henceforth OBU structures), demonstrating that the latter are at least as expressive. As long as certain restrictions are imposed on the form of the OBU structure, the embedding can also go the other way. A generalization of HMS structures (relaxing the partitional properties of knowledge) gives us a full converse. (shrink)

In a seminal paper, Aumann (1987, Econometrica 55, 1–18) showed how the choices of rational players could be analyzed in a unified state space framework. His innovation was to include the choices of the players in the description of the states, thus abolishing Savage’s (1954, The Foundations of Statistics. Wiley, New York) distinction between acts and consequences. But this simplification comes at a price: Aumann’s notion of Bayes rationality does not allow players to evaluate what would happen were they to (...) deviate from their actual choices. We show how the addition of a causal structure to the framework enables us to analyze such counterfactual statements, and use it to introduce a notion of causal rationality. Under a plausible causal independence condition, the two notions are shown to be equivalent. If we are prepared to accept this condition we can dispense with the causal apparatus and retain Aumann’s original framework. (shrink)

This issue was published in the framework of a program that has been made possible by the generous support of the American people through the United States Department of State. The contents are the responsibility of the authors and do not necessarily reflect the views of the Department of State or the United States Government.