Classical multilevel and Bayesian approaches to population size estimation using multiple lists

One of the major objections to the standard multiple-recapture approach to population estimation is the assumption of homogeneity of individual 'capture' probabilities. Modelling individual capture heterogeneity is complicated by the fact that it shows up as a restricted form of interaction among lists in the contingency table cross-classifying list memberships for all individuals. Traditional log-linear modelling approaches to capture–recapture problems are well suited to modelling interactions among lists but ignore the special dependence structure that individual heterogeneity induces. A random-effects approach, based on the Rasch model from educational testing and introduced in this context by Darroch and co-workers and Agresti, provides one way to introduce the dependence resulting from heterogeneity into the log-linear model; however, previous efforts to combine the Rasch-like heterogeneity terms additively with the usual log-linear interaction terms suggest that a more flexible approach is required. In this paper we consider both classical multilevel approaches and fully Bayesian hierarchical approaches to modelling individual heterogeneity and list interactions. Our framework encompasses both the traditional log-linear approach and various elements from the full Rasch model. We compare these approaches on two examples, the first arising from an epidemiological study of a population of diabetics in Italy, and the second a study intended to assess the 'size' of the World Wide Web. We also explore extensions allowing for interactions between the Rasch and log-linear portions of the models in both the classical and the Bayesian contexts.     

Not all leader–member exchanges are created equal: Importance of leader relational identity

Recent research by leadership scholars has emphasized the important role of follower self-identity. For example, leaders influence subordinate attitudes and behaviors by activating a collective identity level among their subordinates. We extend existing identity-based approaches by examining the relational identity level of leaders. Previous work has focused predominantly on followers (vs. leaders) and on collective (vs. relational) identity. Using data from two samples, we supported our hypothesis that leader relational identity moderates relationships of leader–member exchange (LMX) with subordinate task performance and citizenship behaviors. The nature of the interaction was such that the negative relationships of low-quality LMX with performance are mitigated when subordinates had supervisors with strong relational identities. These findings highlight the need to consider not only the identities of followers but those of leaders as well.     

Differentiation Levels of College Students: Effects on Vocational Identity and Career Decision Making

This study assessed the effects of differentiation levels on the career development of college students. Participants were 231 college students who completed the Differentiation of Self Inventory (Skowron & Friedlander, 1998 ), My Vocational Situation (Holland, Daiger, & Power, 1980 ), the Career Decision Profile (CDP; Jones & Lohmann, 1998 ), and demographic questions. The results supported the hypotheses that higher levels of the various components of differentiation would predict higher levels of vocational identity and fewer difficulties with career decision making. In particular, lower levels of emotional cutoff and emotional reactivity and higher levels of “I position” predicted higher levels of vocational identity and career decision making. Results suggest a more complicated picture for fusion, with higher levels being predictive of lower levels of decisiveness but not significantly related to vocational identity. Implications of the results for career counselors are provided.     

Asymptotic distributions for quadratic forms with applications to censored data tests of fit

We obtain the asymptotic distributions of certain forms in observations that are possible Type I and Type II censored. This result is directly applicable to the study of asympototic distributions for censored data versions of the Shapiro- wilk test for normality. Moreove, it applies more generally than just to the null hypothesis of normality.     

An evaluation of the use of diaries in a study of medication in later life

This paper is based upon our experience of commissioning diaries to be kept by research subjects. First the paper reviews some previous research based on diaries, then it outlines the aims of our research and the method of data collection. Then the paper goes on to evaluate the design and use of a diary that participants in our research completed. In particular we consider the ways in which the diary may have biased our sample, caused the participants difficulties and generated poor data. There is also a discussion on how it may have affected behaviour and on the ethical issues that are raised by commissioned diaries. In conclusion, observations are made about the strengths and weaknesses of diaries as an investigative tool with a wider applicability. The diary proved particularly revealing and we recommend that other researchers consider diaries as a method of investigating everyday life.     

Practice wisdom in social work: an uncommon sense in the intersubjective encounter

Social work is not, and should not be, a practice of common sense. The author revisited a vast array of literature on practice wisdom in social work and parallel conceptions in cognate disciplines. For better or worse, the idea of practice wisdom has been revitalized in standing against the deprofessionalization of social work. However, its ambiguity in meaning has somehow overridden its reputation. Practice wisdom is intuitive, tacit, and spontaneous in nature. It is an embodied phronesis of experienced practitioners. The author argues that practice wisdom in social work is not only the wisdom of analytical experience, but it is also the wisdom or a quality characterized by courtesy, kindness, consideration, compassion, and benevolence. It is uniquely uncommonsensical and has to be cultivated through the intersubjective encounter between the practitioner and service user.     

The evolution of university–industry linkages—A framework

This qualitative study extends literature on research commercialization by examining the dynamic nature of university–industry linkages (UIL). Thirty in-depth interviews conducted in Australia and Germany/the Netherlands provide evidence of the different phases through which UILs evolve and respective measures of success. Communication, understanding, trust, and people are universal drivers, yet managers must consider the variations in the nature of these factors to ensure successful UILs. This study equips managers involved in technology transfer, innovation, and commercialization with critical insights into developing effective relationships. The proposed conceptual framework also uncovers notable theoretical and managerial implications and offers some key research directions.     

More than just the media: Considering the role of public relations in the creation of sporting celebrity and the management of fan expectations

This article considers the complex nature of sporting celebrity and the role of media and public relations in the creation of both sports celebrity and the fan expectations associated with that celebrity. While public relations literature has traditionally considered PR as a promotion and communication tool, this article acknowledges that in the cultural and ideological world of sport, PR has a much more sophisticated role to play. In the event of either positive or negative media attention, a sporting celebrity is subjected to unprecedented scrutiny and the increasingly high expectations of fans. However, the expectations of fans are not based on the simple notion of hero worship and role models, and this exploratory study suggests that fans are capable of very complex reactions to the behaviours and marketing personas of sporting celebrities. The use of PR in sport deserves close examination and the reactive spin doctoring techniques of the past should give way to the strategic integration of public relations and media planning in both the creation of the sporting celebrity, balancing the sport vs. private sides of that celebrity, and the varying fan expectations associated with each.