Information matrix estimation procedures for cognitive diagnostic models

Two new methods to estimate the asymptotic covariance matrix for marginal maximum likelihood estimation of cognitive diagnosis models (CDMs), the inverse of the observed information matrix and the sandwich-type estimator, are introduced. Unlike several previous covariance matrix estimators, the new methods take into account both the item and structural parameters. The relationships between the observed information matrix, the empirical cross-product information matrix, the sandwich-type covariance matrix and the two approaches proposed by de la Torre (2009, J. Educ. Behav. Stat., 34, 115) are discussed. Simulation results show that, for a correctly specified CDM and Q-matrix or with a slightly misspecified probability model, the observed information matrix and the sandwich-type covariance matrix exhibit good performance with respect to providing consistent standard errors of item parameter estimates. However, with substantial model misspecification only the sandwich-type covariance matrix exhibits robust performance.     

Specificity of Postural Control: Comparing Expert and Intermediate Dancers

The expert–novice approach is inappropriate for studying postural control in sport and dance when novices are completely unable to perform relevant postural tasks and experts cannot demonstrate specific skills on everyday postural tasks. We tested expertise-specific differences on 6 static everyday and 5 dynamic dance-like postural tasks of varying difficulty in 13 professional and 12 intermediate nonprofessional dancers. Results showed a clear expert advantage on sway area for dance-like postural tasks, but not for static everyday tasks. This effect was also found for the control parameter of root mean square (RMS) velocity and partly for RMS amplitude of the difference signal between CoP and CoG line location. Results indicate that the expert advantage is task-specific and deliver new insights into the specificity of experts' postural performance.     

Dispositional resilience in treatment‐seeking patients with obsessive‐compulsive disorder and its association with treatment outcome

There is a lack of research on the relation between obsessive‐compulsive disorder (OCD) and resilience. Dispositional resilience, as described and defined in literature on hardiness, consists of three facets, namely beliefs about having control in everyday living, having a sense of purpose or commitment, and a positive attitude toward challenges. This study explores associations between dispositional resilience (measured with the Dispositional Resilience Scale (DRS‐15‐R)), symptom severity, and treatment outcome in a sample of 89 patients treated with concentrated exposure therapy (cET), and compares the findings with scores from two reference groups (students and soldiers). The patient group had significantly lower resilience scores than the two reference groups. Weak correlations were observed between dispositional resilience and OCD symptoms. Differences in dispositional resilience were weakly related to remission status at follow‐up (odds ratio of 1.11). Furthermore, resilience improved from pre‐ to post‐treatment (Cohen's d of 0.65). Our results imply that patients’ initial resilience score does not hinder nor facilitate treatment effects to a great extent in this format of ERP treatment.     

From Compassion to Obedience: Gender and Emotion in Two Danish Prayer Books

Drawing from recent scholarship on prayer, identity formation and the history and sociology of emotion, this article explores the intersection of gender and emotion in two Danish prayer books dating from before and after the Lutheran Reformation in 1536. It is argued that the introduction of Lutheranism in Denmark resulted in a more strictly gendered understanding of family prayer. In this, the social and emotional ideal of obedience to paternal authority came to eclipse the expression of compassion with the suffering Christ that was a characteristic feature of late-medieval prayer.     

To read two pages,I need 5 minutes,but give me 5 minutes and I will read four: how to change productivity estimates by inverting the question

Past research has shown that people underestimate the time they need to complete large tasks, whereas completion times for smaller tasks are often overestimated, suggesting higher productivity estimates for larger than for smaller tasks. By replacing the traditional question about how much time a given work will take with a question about how much work can be completed within a given amount of time, we also found the opposite pattern. Both trends could reflect a general tendency to underestimate large amounts (of work as well as time) relatively to small ones. This ‘magnitude bias’ was explored in two studies where students estimated reading tasks, a third where IT‐professionals estimated software projects, and a fourth where participants imagined a familiar walk, divided into time segments or part distances of varying lengths. Copyright © 2010 John Wiley & Sons, Ltd.     

Difficult but Necessary: Conditions of a Contemporary Theology of Love

Abstract : Nørager takes his point of departure in the observation that in modernity “love” has increasingly and undisputedly acquired the status as the fundamental attribute of God. This in turn, however, has made a theology of love vulnerable to the critique leveled by Ludwig Feuerbach, who argued forcefully that God's love in reality was nothing but humanity's ideal of perfect love. Briefly rehearsing two of the most important solutions to this conundrum (Søren Kierkegaard and Anders Nygren), Nørager finds both of them unduly polemical toward “natural” love, leaving us with the idea of a dichotomy or inner opposition between human and divine love. Instead, Nørager points toward a new theology of love where eros and agape are recognized as differing aspects within a continuum of love, and where human and divine love are perceived as mirroring one another.     

Ordinary experience and the epoché: Husserl and Heidegger versus Rosen (and Cavell)

In various publications, Stanley Cavell and Stanley Rosen have emphasized the philosophical importance of what they both call “the ordinary.” They both contrast their recovery of “the ordinary” with traditional philosophy, including the phenomenological philosophy of Edmund Husserl. In this paper, I address Rosen’s claims in particular. I argue that Rosen turns the real situation on its head. Contra Rosen, it is not the case that the employment of Husserl’s epoché distorts the authentic voice of “the” ordinary—a voice that is clearly audible only from within everyday life. For (pace both Cavell and Rosen) there is no single “voice” of the ordinary: There are many such “voices,” not all of which are to be relied upon. Therefore, if we want to achieve an adequate grasp of ordinary experience, and Rosen does want this, we precisely need the epoché to curtail the misleading messages of certain other “voices of the ordinary.” Moreover, and somewhat surprisingly, this positive evaluation of the Husserlian epoché finds support in Heidegger’s writings from the twenties. I argue that Heidegger, too, believed that the epoché was an indispensable tool for the philosophical attempt to capture ordinary experience.