On the detection of changes in autoregressive time series,II. Resampling procedures

We study an autoregressive time series model with a possible change in the regression parameters. Approximations to the critical values for change-point tests are obtained through various bootstrapping methods. Theoretical results show that the bootstrapping procedures have the same limiting behavior as their asymptotic counterparts discussed in Hušková et al. [2007. On the detection of changes in autoregressive time series, I. Asymptotics. J. Statist. Plann. Inference 137, 1243–1259]. In fact, a small simulation study illustrates that the bootstrap tests behave better than the original asymptotic tests if performance is measured by the α$\alpha$- and β$\beta$-errors, respectively.     

Black African Children and the Child Protection System

This paper explores black African children’s experiencesof the child protection system in the UK. The central focusof the paper is a review of the available literature on thesocial circumstances and environmental influences affectingmany black African families involved in the child protectionsystem; specific parenting practices and care-giving environments;and their experiences of social work and other professionalinterventions aimed at safeguarding and promoting the needsof African children. This paper examines these themes to elucidatethe factors that contribute to the provision of effective, culturallycompetent interventions with black African children at riskof significant harm. It suggests that there are a number oftensions inherent for professionals in working with culturallydiverse African families such as reconciling different beliefsand behaviours concerning child-rearing practices; affirmingthe parenting practices of these families in the engagementprocess; adopting a strengths-based orientation whilst at thesame time safeguarding and promoting the welfare of vulnerablechildren. The paper concludes with a discussion of the implicationsfor practice.     

Forgiving Perpetrators of Violence: Colombian People’s Positions

Colombian people’s positions regarding the granting of forgiveness to persons who have been more or less actively involved in the violence that ravaged the country during the past 60 years were examined. Four hundred lay people living in Bogota were presented with 48 concrete cases in which a former perpetrator of violence (a member of the guerillas, the paramilitary, the military or a drug cartel) asked for forgiveness from a victim’s family. These cases were constructed using a three-factor orthogonal design: Degree of Responsibility × Severity of the Negative Acts Committed × Apologies. Four basic positions were found. The most common one, which was shared by nearly 40 % of the sample, mostly people from the wealthier segments of society, was “no forgiveness under any condition”. Eighteen percent of the participants, mostly from the poorest segments of society, considered that forgiveness could be granted each time the former perpetrators expressed true repentance (and, in the case of former organizers, if they have offered adequate compensation and had not committed very severe crimes). This was the most frequently observed attitude when perpetrators were former members of the paramilitary. Fifteen percent of the participants considered that forgiveness should be systematically granted. Finally, 28 % of the participants were undecided about the issue.     

Transformational leadership,job satisfaction,and team performance: A multilevel mediation model of trust

In spite of calls for deliberate differentiation between individual and team levels of analysis, leadership research based on well-grounded theory referring to multiple levels is scarce. We seek to fill this gap by analyzing the relations between transformational leadership, trust in supervisor and team, job satisfaction, and team performance via multilevel analysis. Results are based on a sample of 360 employees from 39 academic teams. Transformational leadership was positively related to followers' job satisfaction at individual as well as team levels of analysis and to objective team performance. The relation between individual perceptions of supervisors' transformational leadership and job satisfaction was mediated by trust in the supervisor as well as trust in the team. Yet, trust in the team did not mediate the relationship between team perceptions of supervisors' transformational leadership and team performance. Implications for theory and research of leadership at multiple levels as well as for practice are discussed.     

Situation-based measurement of the full range of leadership model — Development and validation of a situational judgment test

In response to calls for context-specificity in leadership research, we developed and validated a Situational Judgment Test of the Full Range of Leadership Model (SJT-FRLM). Three consecutive studies were conducted following the typical steps of test development. Study 1 served measure development and pilot testing: item stems were generated empirically, item responses were developed with a theory-driven approach, and pilot testing was based on a leader sample. Study 2 served to analyze construct- and criterion-related validity of the instrument. Moreover, an empirical scoring key was developed that weights each item response according to its relation with leadership effectiveness in each situation. In Study 3, we demonstrated incremental validity and interrater agreement. The test fills an important gap in literature because it not only has predictive validity above and beyond established measures, but also takes into account the contextual element of leadership.     

Authentic leadership: A review of the literature and research agenda

The past decade has seen a dramatic increase in scholarly interest in the topic of authentic leadership. We review this literature with the goal of clarifying the state of knowledge in the field. We begin with a historical overview of the construct's definition and evolution. Next, we present the results of a content analysis of 91 publications that focus on authentic leadership. Specifically, we examined the publication type (theoretical, empirical, and practitioner), contributors (e.g., discipline, nationality, and institutional affiliation), theoretical foundations, research strategies, sample location/type, data collection methods, analytical procedures, and nomological network of authentic leadership. We conclude by presenting an agenda for future research.     

Global prior distributions for the analysis of discrete graphical models

Summary We propose a new class of prior distributions for the analysis of discrete graphical models. Such a class, obtained following a conditional approach, generalizes the hyper Dirichlet distributions of Dawid and Lauritzen (1993), since it can be extended to non decomposable graphical models. The two classes are compared in terms of model selection, with an application to a medical data-set illustrating the performance of the two resulting procedures. The proposed class turns out to select simpler, more par-simonious structures.     

Through a glass darkly: Chronic illness in the therapist

This paper is about doing psychotherapy while suffering from a chronic illness. The purpose is to describe the manner in which ongoing irreversible pain integrates itself into the life of any human being, but specifically that of the therapist. The process of weaving the experience into the life narrative and in turn the therapeutic narrative is explored.