Integrating skill acquisition and perspective taking capacity in the development of leaders

This essay integrates approaches from three literatures to develop a model of leader development. Kanfer and Ackerman's (1989) episodic model of skill acquisition is combined with Kegan's approach to adult development to encompass development of transactional and transformational leadership. Importantly, feedback mechanisms are added to explain changes in individuals'intellectual capacities, values, and beliefs over time. This framework provides a summary of what is known about the processes underlying developmental change in how leaders understand and act on their environment and provides specific directions for future research.     

The Kyana Corroboree: Cultural Production of Indigenous Ethnogenesis

This article analyzes the 1993 Kyana Corroboree of the Noongah Aborigines of Western Australia as a case study of the cultural production and cultural politics of ethnogenesis and indigeneity through public celebration. Kyana is a local example of how indigenous peoples globally experience "ethnic reorganization," an often inchoate, mutable process of social reproduction that encourages the survival of an ethnic group, albeit in an altered form. This article demonstrates how Noongah and Aboriginal ethnogenesis is composed of a mercurial mixture of conflict and concordance, especially in regard to aspirations toward some level of influence over the self-definition of Aboriginality and its symbolic representations.
The organization of contemporary ethnicity and the nature of current ethnic relations reflect contemporary adaptations and continually evolving identities and institutions.—Nagel and Snipp 1993, p. 225
Celebration is a "text," a vivid aesthetic creation that reflexively depicts, interprets and informs its social context. [Celebration] articulates and modifies power relations.—Manning 1983, p. 6     

Restricted Lorenz dominance of economic inequality in one and many dimensions

The paper investigates Lorenz dominance and generalized Lorenz dominance to compare distributions of economic status in one and several attributes. Restrictions of these dominance relations are developed that focus on central parts of the distributions and facilitate their comparison.     

POPAN-4: enhancements to a system for the analysis of mark-recapture data from open populations

We describe recent developments in the POPAN system for the analysis of mark-recapture data from Jolly-Seber type experiments. The previous versions (POPAN-3 for SUN/OS workstations and POPAN-PC for IBM-PC running DOS or Windows) included general statistics gathering and testing procedures, a wide range of analysis options for estimating population abundance, survival and birth parameters, and a general simulation capability. POPAN-4 adds a very general procedure for fitting constrained models based on a new unified theory for Jolly-Seber models. Users can impose constraints on capture, survival and birth rates over time and/or across attribute groups (e.g. sex or age groups) and can model these rates using covariate models involving auxiliary variables (e.g. sampling effort).     

Graph and semigroup homomorphisms on networks of relations

The algebraic definitions presented here are motivated by our search for an adequate formalization of the concepts of social roles as regularities in social network patterns. The theorems represent significant homomorphic reductions of social networks which are possible using these definitions to capture the role structure of a network. The concepts build directly on the pioneering work of S.F. Nadel (1957) and the pathbreaking approach to blockmodeling introduced by Lorrain and White (1971) and refined in subsequent years (White, Boorman and Breiger 1976;Boorman and White 1976; Arabie, Boorman and Levitt, 1978; Sailer, 1978).Blockmodeling is one of the predominant techniques for deriving structural models of social networks. When a network is represented by a directed multigraph, a blockmodel of the multigraph can be characterized as mapping points and edges onto their images in a reduced multigraph. The relations in a network or multigraph can also be composed to form a semigroup.In the first part of the paper we examine “graph” homomorphisms, or homomorphic mappings of the points or actors in a network. A family of basic concepts of role equivalence are introduced, and theorems presented to show the structure preserving properties of their various induced homomorphisms. This extends the “classic” approach to blockmodeling via the equivalence of positions.Lorrain and White (1971), Pattison (1980), Boyd, 1980, Boyd, 1982, and most recently Bonacich (1982) have explored the topic taken up in the second part of this paper, namely the homomorphic reduction of the semigroup of relations on a network, and the relation between semigroup and graph homomorphisms. Our approach allows us a significant beginning in reducing the complexity of a multigraph by collapsing relations which play a similar “role” in the network.     

Choice under complete uncertainty when outcome spaces are state dependent

One central objection to the maximin payoff criterion is that it focuses on the state that yields the lowest payoffs regardless of how low these are. We allow different states to have different sets of possible outcomes and show that the original axioms of Milnor (1954) continue to characterize the maximin payoff criterion, provided that the sets of payoffs achievable across states overlap. If instead payoffs in some states are always lower than in all others then ignoring the “bad” states is no longer inconsistent with these axioms. Similar dependence on overlap of outcome spaces across states holds for the minimax regret and maximin joy criteria.      

Philosophes of the Conservative Nation: Burke, Macaulay, Disraeli

The argument here concerns the myths of the English, and of English history; it suggests that myths of providential England were powerful elements in twentieth-century British political life. Most of all, they powerfully informed Conservative conceptions of civilization, though they also exerted a wider political influence. The essay explores the invention of these myths in three pre-eminent writers: Burke, Macaulay, and Disraeli, and suggests that from their writings emerged a system of narration which came to be 'remembered' as the founding myth of the political nation — the conservative nation — in the twentieth century. By the time of mass democracy, the partisan divisions (between Whig and Tory) had been forgotten in favour of a wider cultural 'transformism,' which did much to cement the emerging coalition of landed and bourgeois politics in the late nineteenth and early twentieth centuries. In the process, the very nature of politics itself came to be redefined.     

Specification analysis in mixed hazard models and a test of crossing survival functions

The paper investigates diagnostic procedures for the specification of common hazard models in duration analysis. It is shown that under mixed hazard specifications the survival functions of different subgroups cannot cross. A nonparametric test for the crossing of two survival functions is provided and its applications in duration analysis are discussed. In particular, the proportional hazard model with unobserved heterogeneity (PHU) is investigated, and procedures are developed to test whether given data are consistent with the PHU model and whether they contain unobserved heterogeneity within the PHU specification. Examples in which crossing survivals are of substantive concern are discussed, including the dynamics of infectious diseases and the demand for vaccination.     

Estrangement Between Mothers and Adult Children: The Role of Norms and Values

Relationships between mothers and their children are expected to be lifelong and rewarding for both members of the dyad. Because of the salience of these ties, they are likely to be disrupted only under conditions of extreme relational tension and dissatisfaction. In this work, the authors drew on theoretical arguments regarding societal norm violations and value similarity to examine the processes that lead to estrangement between mothers and adult children. To address this issue, they used quantitative and qualitative data on 2,013 mother–adult child dyads nested within 561 later life families, including 64 in which mothers reported being estranged from at least 1 of their children. Value dissimilarity was found to be a strong predictor of estrangement, whereas violation of serious societal norms was not. Qualitative data revealed that value dissimilarity created severe relational tension between mothers and adult children leading to estrangement.