On the determination of redundancies in sociometric chains

The use of a matrix to represent a relationship between the members of a group is well known in sociometry. If this matrix is raised to a certain power, the elements appearing give the total number of connecting paths between each pair of members. In general, some of these paths will be redundant. Methods of finding the number of such redundant paths have been developed for three- and four-step chains by Luce and Perry (3) and Katz (2), respectively. We have derived formulas for the number of redundant paths of five and six steps; and in addition, an algorithm for determining the number of redundant paths of any given length.The research leading to this paper was supported by a grant from the Rockefeller Foundation.     

A generalization of the interpoint distance model

Coombs and Kao have conjectured that, given the distances between a set of points representing persons and another representing objects, factor analytic methods can be used to recover the locations of the persons and objects. In the present paper it is proved that the conjecture applies, with some qualifications, to squared distances rather than distances themselves. Possible applications to scaling and to inventory responses are discussed.Most of the work that resulted in this paper was done while the authors were affiliated with Educational Testing Service. Portions of this paper were presented at the APA convention, St. Louis, 1962.     

Do We Need Grounding?

Many have been tempted to invoke a primitive notion of grounding to describe the way in which some features of reality give rise to others. Jessica Wilson argues that such a notion is unnecessary to describe the structure of the world: that we can make do with specific dependence relations such as the part–whole relation or the determinate–determinable relation, together with a notion of absolute fundamentality. In this paper I argue that such resources are inadequate to describe the particular ways in which some parts of reality give rise to others, and thus that we do in fact need grounding.     

Siblings’ Understanding of Teaching in Early and Middle Childhood:‘Watch Me and You’ll Know How to Do It’

This study examined siblings’ knowledge about the teaching concept during naturalistic teaching contexts, wherein children’s communicative interactions were used as a gateway to their social understanding (Turnbull, Carpendale, & Racine, 2009). Participants included 39 sibling dyads (older age group, M_age = 6;4; younger age group, M_age = 4;5) observed for six 90-min sessions at home. Teaching episodes were identified and coded for: a) initiation of teaching (i.e., assumes role or learner requests teaching), b) knowledge states (i.e., knowledge, lack of knowledge, questioning knowledge), c) transfer of knowledge (i.e., learning), and d) teaching strategies (e.g., direct instruction). Children who assumed the teaching role referenced knowledge and questioning knowledge, whereas learners requested teaching by referencing a lack of knowledge. Firstborn learners were more likely to reference knowledge versus second-born learners who referenced a lack of knowledge. Transfer of knowledge occurred when teachers referenced knowledge. When learners referenced knowledge states, teachers were more likely to use direct instruction, demonstration, and negative feedback. Results underscore the developmental significance of sibling teaching and demonstrate a novel approach to studying children’s social understanding in the teaching context (Turnbull et al., 2009).     

‘A man after god’s own heart’: charisma,masculinity and leadership at a charismatic Church in Brighton and Hove,UK

This article suggests that the gendered aspects of charisma have so far been overlooked in recent scholarship and seeks to align studies of charismatic religious leaders more fully with studies of masculinity and the ‘masculinisation’ of Charismatic churches. Based on research conducted at the Church of Christ the King (CCK) in Brighton and Hove, UK, I analyses how leadership operates as a key language for mediating masculinity, giving young men ways of being manly within both Christian and church parameters as well as forming links between experienced leaders and their young apprentices. Focusing on a dramatic visit by a notorious international preacher as an instance of charismatic masculinity in action, the author shows how an understanding of a corporate culture of masculinity can lend new insight into our understanding of charisma as both a relational construct and a system of individual authority which is tested at times of crisis and succession.     

Meta‐Analysis of Counseling Outcomes for the Treatment of Posttraumatic Stress Disorder

This meta‐analysis of 152 published posttraumatic stress disorder (PTSD) clinical trials from 1990 to 2012 concluded that counseling generally produced a small to large effect of treatment across all comparison conditions at termination (d+ = 0.30 to 0.89). These gains were maintained at longest follow‐up (d+ = 0.58 to 0.86) for the wait‐list, treatment‐as‐usual, and single‐group comparisons, but not for the follow‐up placebo comparison (d+ = 0.15), probably because of the low power (j = 3 placebo studies). Clinical trial findings were synthesized using a random‐effects model. No effects of publication bias or moderating variables were evident. No difference was found between trauma‐focused and non‐trauma‐focused approaches. Implications for counseling practice and future PTSD outcome research are addressed.     

Making Energy Infrastructure: Tactical Oscillations and Cosmopolitics

Abstract

Integrating renewable energy sources into the power grid and ensuring public interest in energy is a key concern in many countries. What role may art play, and what political strategies do artists employ, in order to intervene in the infrastructuring of energy and public environments? As the case study here, a Copenhagen art and energy competition invited artists and designers from around the world to submit ideas for large-scale public artworks that can generate utility-scale renewable energy. The competition process had a smooth and consensus-seeking political strategy, manifested in a set of tactical oscillations. In order to engage with local stakeholders and ensure the success of the competition, the project managers oscillated between presenting the competition as part of existing policy initiatives and as posing alternatives to existing policy. They oscillated between being situated in a pragmatic present and in an unprecedented future; between being tied to the specific site of the competition and belonging to no place in particular; and not least between being predominantly an art project and primarily an infrastructure project. Remarkable differences between cosmopolitics and smooth politics appear here, especially compared to the literature analysing the roles played by art and design when imagining new ways of living with energy. Oscillation between smooth politics and cosmopolitics may provide a generative way forward for actors wishing to engage in the infrastructuring of environments.     

A Definition Framework for the Terms <Emphasis Type="Italic">Nanomaterial</Emphasis> and <Emphasis Type="Italic">Nanoparticle</Emphasis>

Scientific writings and policy documents define the terms nanomaterial and nanoparticle in various ways. This variation is considered problematic because the absence of a shared definition is understood as potentially hindering nanomaterial knowledge production and regulation. Another view is that the existence of a shared definition may itself cause problems, as rigid definitions arguably exclude important aspects of the studied phenomena. The aim of this paper is to inform this state of disagreement by providing analytical concepts for a systematic understanding of how, and even whether, nanomaterial and nanoparticle could and should be defined. To do this, we review definitions of nanomaterial and nanoparticle presented in research articles and policy documents. Definitions were identified by first conducting a Scopus search and then tracing cited definitions back to their sources. In total, 36 definitions were identified. Theories of definition from philosophy and linguistics provide analytical guidance for structuring and categorizing the identified definitions, and the main analytical dimensions of the definitions are then identified and discussed. Finally, we propose a framework for understanding the process of defining nanomaterial and nanoparticle. This framework considers both the generality needed for a shared understanding (by suggesting proto-definitions of nanomaterial and nanoparticle) and the level of precision required for different purposes (by allowing for various explications of the proto-definitions).