Application of Dirichlet mixture of normals in growth curve models

In this paper, we present growth curve models with an auxiliary variable which contains an uncertain data distribution based on mixtures of standard components, such as normal distributions. The multimodality of the auxiliary random variable motivates and necessitates the use of mixtures of normal distributions in our model. We have observed that Dirichlet process priors, composed of discrete and continuous components, are appropriate in addressing the two problems of determining the number of components and estimating the parameters simultaneously and are especially useful in the aforementioned multimodal scenario. A model for the application of Dirichlet mixture of normals (DMN) in growth curve models under Bayesian formulation is presented and algorithms for computing the number of components, as well as estimating the parameters are also rendered. The simulation results show that our model gives improved goodness of fit statistics over models without DMN and the estimates for the number of components and for parameters are reasonably accurate.     

Changing Leadership and Gender in Public Sector Organizations

The aim of this paper is to examine the ways in which leadership at middle management level in the public realm is gendered. This is attempted largely through a consideration of academic literature, supported by some empirical findings from a research investigation into higher education and social work in Sweden and England and a review of literature that reveals varying types of leadership characterized as masculinist. Taking the position that context shapes social relationships and subject positions, and provides opportunities as well as constraints, we consider leadership in the public sector under the sway of new public management, framed by neo‐liberalism and the valorization of competition, self‐interested instrumentality, uncertainty and risk, operationalized in public sector organizations through performative regimes. It is argued that while some women and men are willing participants in the new regimes, others are antagonistic or ambivalent, finding themselves mired in neo‐bureaucratic processes of surveillance and control, often stuck in occupational cul‐de‐sacs. It is contended that neo‐liberalism and new public management are associated with masculinist forms of rationality that elevate individual winners and losers and divert attention from collective issues of gender. Rather than focus on gendered styles of leadership it is suggested that it is more important to look at their gendered performance and effects.     

The Two Embedded Research Functions of Heuristic Case Practice

Abstract

In social work's formative years, practice, education, training, research and theory building were an integrated whole within the field. However, when educational responsibilities moved to tertiary institutions, research and theory building was also claimed as a primary responsibility by these bodies. Since then, the function of research has been seen from the perspective of tertiary institutions as the post hoc evaluation of intervention effectiveness. The present paper proposes that two distinct types of research remain seamlessly embedded within everyday case practice, namely Interventive research and Modelling research. Interventive research is the information gathering and synthesising process creating a theory of one that guides each intervention. Modelling research is the reflective linking of interventions over a class of cases to build practice wisdom and guide future interventions in similar cases. Such research is not free from experimental control, as has been assumed in the past, but has a number of embedded bias controls that protect the integrity of practice interventions by giving greater reliability and validity than assumed previously.     

A Framework for Use with Racially and Culturally Integrated Families: The Cultural-Racial Identity Model as Applied to Transracial Adoption

A new model for understanding and depicting the unique identity experiences of those reared in racially and/or culturally integrated families is presented. The model accountsfor heterogeneity within groups defined by their racially integrated families. For the purpose of describing and presenting the model, it was applied to the unique experiences of transracial adoptees. The model allows distinctions to be made between racial identity and cultural identity. These distinctions comprise 16 proposed identities of transracial adoptees and are made up of the degrees to which they have knowledge of, awareness of, competence within, and comfort with their own racial group’s culture, their parents’ racial group’s culture, and multiple cultures as well as the degree to which they are comfortable with their racial group membership and with those belonging to their own racial group, their parents’ racial group, and multiple racial groups. A modelfor understanding the role of parents, extended families, and social and environmental contexts was also presented as a guide for demonstrating the factors impacting the culturalracial identities of transracial adoptees or others from racially and/or culturally integrated families.     

Exploring the relationship between gambling,debt and financial management in Britain

The issue of how and why gamblers end up in debt has received comparatively little attention in the literature. Data from the 2007 Adult Psychiatric Morbidity Survey (APMS) revealed that although problem gamblers were more likely than non-problem gamblers to have forms of financial debt, just under two-thirds of problem gamblers (62%) reported having no debt. Using a qualitative approach, this study aimed to explore the issue from the perspective of gamblers themselves through interviews with 27 purposively sampled gamblers drawn from participants who took part in the APMS and the British Gambling Prevalence Survey 2010. Analysis, using the Framework method, suggested the existence of four kinds of gamblers categorized by their approach to gambling spending and their approach to their general spending: ‘controlled gamblers’, ‘uncontrolled gamblers’, ‘uncontrolled spenders’ and ‘chaotic spenders’. Also proposed on the basis of these data is an ecological model which aims to capture the different levels of personal and environmental factors that influenced people's financial decisions, including cognitive factors, control and compulsion, normative spending, resource and financial management, and the credit environment. The implications for practice are also discussed.     

The characteristics and management of elder abuse: evidence and lessons from a UK case study

Despite older people representing a significant majority of victims of abuse in the UK and Europe, evidence about its characteristics and management is limited. This article reports on an analysis of adult protection referrals for older people over an eight year period in two English local authorities. It extends understanding of the characteristics of elder abuse and identifies lessons for its effective management. Findings suggest that older people are at particular risk of multiple and physical abuse. Those living alone are especially vulnerable to financial abuse and those living in a care home to multiple abuse. The most common sites of abuse were the person's own home or a care home. Just two fifths of abuse referrals were confirmed, with the vast majority involving multi-agency consultation and most resulting in ongoing monitoring. Findings also suggest that risk is a product of the intersection of dependency and setting and that information about user and carer need—especially the nature of disability—could enhance the quality of adult protection data and safeguarding responses. The study underscores the need for adult protection legislation and of committing professional resources to the prevention, identification, assessment and management of elder abuse across Europe.     

Inter‐organizational Cooperation and Environmental Change: Moderating Effects between Flexibility and Innovation Performance

The paper investigates the moderator effect of inter‐organizational cooperation in the relationship between workplace flexibility and innovation performance. This research question is important because innovation is dependent on the strategic integration of technological knowledge, requiring organizations to acquire new capabilities rapidly or to ensure the presence of knowledge that may be beyond existing internal capabilities. Inter‐organizational cooperation constitutes a relevant mechanism for a firm to increase its knowledge base concerning new products and processes. High‐cooperation firms may have more opportunities to take advantage of flexibility for innovation performance because it facilitates the access and dispersion of knowledge within the firm. We test the research hypotheses in a sample of manufacturing and service firms. The results contribute to the literature on flexibility and innovation because they demonstrate that inter‐organizational cooperation moderates the relationship between flexibility and innovation performance. We discuss the implications of these results for future research and managerial practice.