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We provide a new characterization of the equality of two positive-definite matrices A and B, and we use this to propose several new computationally convenient statistical tests for the equality of two unknown positive-definite matrices. Our primary focus is on testing the information matrix equality (e.g. White, 1982, 1994). We characterize the asymptotic behavior of our new trace-determinant information matrix test statistics under the null and the alternative and investigate their finite-sample performance for a variety of models: linear regression, exponential duration, probit, and Tobit. The parametric bootstrap suggested by Horowitz (1994) delivers critical values that provide admirable level behavior, even in samples as small as n = 50. Our new tests often have better power than the parametric-bootstrap version of the traditional IMT; when they do not, they nevertheless perform respectably.

The Bureau of Economics in the Federal Trade Commission has a three-part role in the Agency and the strength of its functions changed over time depending on the preferences and ideology of the FTC’s leaders, developments in the field of economics, and the tenor of the times. The over-riding current role is to provide well considered, unbiased economic advice regarding antitrust and consumer protection law enforcement cases to the legal staff and the Commission. The second role, which long ago was primary, is to provide reports on investigations of various industries to the public and public officials. This role was more recently called research or “policy R&D”. A third role is to advocate for competition and markets both domestically and internationally. As a practical matter, the provision of economic advice to the FTC and to the legal staff has required that the economists wear “two hats,” helping the legal staff investigate cases and provide evidence to support law enforcement cases while also providing advice to the legal bureaus and to the Commission on which cases to pursue (thus providing “a second set of eyes” to evaluate cases). There is sometimes a tension in those functions because building a case is not the same as evaluating a case. Economists and the Bureau of Economics have provided such services to the FTC for over 100 years proving that a sub-organization can survive while playing roles that sometimes conflict. Such a life is not, however, always easy or fun.

The purpose of this chapter is to review the historical development of identity theory from 1988 to the present, and then outline some thoughts about future directions for the theory.

The chapter discusses major advances in identity theory over the past 25 years such as the incorporation of the perceptual control system into the theory, the introduction of “resources” in which symbolic and sign meanings are important, new views of the social structure, the relevance of the situation in influencing the identity process, the idea of different bases of identities, broadening our understanding of multiple identities, studying identity change, and bringing in emotions into the theory.

Throughout the review, empirical work is identified and briefly discussed that supports the major advances of the theory.

The chapter suggests a number of ways that identity theory may be developed in the future such as examining negative or stigmatized identities. Additionally, there is a discussion as to ways in which the theory may be tied to other theoretical traditions such as affect control theory, exchange theory, and social identity theory.

Identity theory has had a number of applications to various areas in society, including understanding crime, education, race/ethnicity, gender, the family, and the environment.

This is the most recent overview of identity theory over the past 25 years. It becomes clear to the reader that the theory offers a way of understanding the person as a cognitive, emotional, and behavioral agent who influences the structure of society but who is also influenced by the social structure.

Snow White is one of the most popular fairy tales worldwide. Therefore, it is not surprising that the story has been reconsidered multiple times during the current trend of producing fairy tale adaptations. Especially the Evil Queen has become an object of further examination in many recent instalments of the story. In this chapter, I analyse the revision of Snow White's stepmother in the book series The Lunar Chronicles (2012–2016), the films Mirror Mirror (2012), Snow White and the Huntsman (2012) and The Huntsman: Winter's War (2016), as well as the TV-series Once Upon a Time (2011–2018). Compared to other villains in recent fairy tale adaptations, who are, like Maleficent, redeemed, the queen remains an embodiment of evil and terror in most adaptations. I outline the depiction of the Evil Queen in present-day US-American fairy tale narratives, assessing what makes her the most villainous woman in all the fairy tale realms and questioning why many of these stories try to understand but do not forgive her. The focus of this investigation is on the backstory that she is equipped with, her crimes, and her ultimate fate. Although she has been abused, traumatized, and betrayed, she seems to remain an uber villain, not only attempting to kill her stepdaughter but also destroying nature, starving her people, and spreading a deadly virus. This kind of representation might result from the fact that her opponent is by the very name the purest fairy tale princess ever known.

Purpose – This chapter contributes to comparative biopolitics and reviews primatological literature, especially about our nearest relatives, the Great Apes.

Design/methodology/approach – Biopolitics in this chapter means evolutionarily informed political science, with emphasis on power relations. I review the literature on intrasexual and intersexual dominance interactions among individuals and competitive and/or agonistic interactions among groups in the Great Apes (Hominidae, formerly Pongidae): orangutan (Pongo with two species and three subspecies), gorilla (Gorilla with four subspecies), bonobo (Pan paniscus), and common chimpanzee (Pan troglodytes with four subspecies). In the final section I present some (speculative) thoughts on Pan prior or the modern human ancestor.

Findings – Not only Man is a political animal.

Originality/value – Impartial, objective, and as complete as possible review of the literature for the students of (comparative) politics, ethology, and psychology.

The conception of markets as interfaces connecting semi-autonomous systems of producers and customers has led to an extensive use of social network analysis. So far, the network focus has been on connections among people, paying less attention to the crucial role played by connections between cultural elements (e.g., concepts, representations, ideas) in the way markets are formed and sustained. Such connections constitute “semantic networks” and are the focus of the present article. We attend to them by developing a network view of the cultural dimension of markets and apply it in an empirical setting where culture plays a crucial role – luxury watchmaking – to illustrate the impact of market semantic networks on a major outcome: price.

Even more than 50 years after the Civil Rights Act of 1964 prohibited discrimination toward a number of groups in employment settings in the United States, workplace discrimination remains a persistent problem in organizations. This chapter provides a comprehensive review and analysis of contemporary theory and evidence on the nature, causes, and consequences of discrimination before synthesizing potential methods for its reduction. We note the strengths and weaknesses of this scholarship and highlight meaningful future directions. In so doing, we hope to both inform and inspire organizational and scholarly efforts to understand and eliminate workplace discrimination.