A Bayesian Nonparametric Approach to Test Equating

A Bayesian nonparametric model is introduced for score equating. It is applicable to all major equating designs, and has advantages over previous equating models. Unlike the previous models, the Bayesian model accounts for positive dependence between distributions of scores from two tests. The Bayesian model and the previous equating models are compared through the analysis of data sets famous in the equating literature. Also, the classical percentile-rank, linear, and mean equating models are each proven to be a special case of a Bayesian model under a highly-informative choice of prior distribution.     

Estimation of the Nonlinear Random Coefficient Model when Some Random Effects Are Separable

A method is presented for marginal maximum likelihood estimation of the nonlinear random coefficient model when the response function has some linear parameters. This is done by writing the marginal distribution of the repeated measures as a conditional distribution of the response given the nonlinear random effects. The resulting distribution then requires an integral equation that is of dimension equal to the number of nonlinear terms. For nonlinear functions that have linear coefficients, the improvement in computational speed and accuracy using the new algorithm can be dramatic. An illustration of the method with repeated measures data from a learning experiment is presented.     

‘Our way of life is worth defending’: testing a model of attitudes towards superordinate group membership through a study of Scots' attitudes towards Britain

This research used a survey design (N = 227) to investigate Scottish people's support or opposition to independence from Britain. It was hypothesised that political attitudes towards supra‐national bodies are not a direct function of the degree of ingroup (Scottish) identification, but are moderated by the extent to which the expression of ingroup identity is seen as being undermined within the larger entity. This feeling of identity undermining is assumed to arise from perceptions of incompatibility with the outgroup and ingroup powerlessness within the common group. The results provided support for these hypotheses. Only for those participants who had high feelings of identity undermining did identification lead to stronger separatist attitudes. Moreover, incompatibility with the outgroup and ingroup powerlessness predicted feelings of identity undermining while this latter mediated their impact on attitudes to being part of Britain. These findings underline the importance of taking into account (a) the contents ascribed to identities and their relations, and (b) the practical ability to pursue a way of live based on these contents in order to understand the way identity processes shape attitudes towards superordinate groups. Copyright © 2008 John Wiley & Sons, Ltd.     

Skeptical theism and moral obligation

Skeptical theism claims that the probability of a perfect God’s existence isn’t at all reduced by our failure to see how such a God could allow the horrific suffering that occurs in our world. Given our finite grasp of the realm of value, skeptical theists argue, it shouldn’t surprise us that we fail to see the reasons that justify God in allowing such suffering, and thus our failure to see those reasons is no evidence against God’s existence or perfection. Critics object that skeptical theism implies a degree of moral skepticism that even skeptical theists will find objectionable and that it undermines moral obligations that even skeptical theists will want to preserve. I discuss a version of the first objection and defend a version of the second.     

The influence of performance feedback on goal-setting and mental effort regulation

Goal-setting and mental effort investment may be influenced by the perception of success or failure. The aim of the current study was to investigate the dynamics of motivational intensity model using false performance feedback. Forty participants performed a demanding cognitive task over five successive (5 min) blocks. Participants received performance feedback of either progressive success or progressive failure. A number of psychophysiological variables were used to index mental effort investment and emotion, including: HRV components, blood pressure, skin conductance level, EEG, and facial EMG. Subjective estimates of mood, workload and motivation were also collected alongside performance measures. The success group experienced positive affect and a less pronounced decline in subjective motivation in response to a perception of successful achievement. In contrast, feedback of failure led to adverse changes in mood/motivation, but did not lead to the absolute withdrawal of effort, although trends in the psychophysiological data suggest that participants in the failure group were on the verge of abandoning the task. The implications of these findings are discussed within the context of goal-setting and effort regulation models.     

The bimodal bilingual brain: effects of sign language experience

Bimodal bilinguals are hearing individuals who know both a signed and a spoken language. Effects of bimodal bilingualism on behavior and brain organization are reviewed, and an fMRI investigation of the recognition of facial expressions by ASL-English bilinguals is reported. The fMRI results reveal separate effects of sign language and spoken language experience on activation patterns within the superior temporal sulcus. In addition, the strong left-lateralized activation for facial expression recognition previously observed for deaf signers was not observed for hearing signers. We conclude that both sign language experience and deafness can affect the neural organization for recognizing facial expressions, and we argue that bimodal bilinguals provide a unique window into the neurocognitive changes that occur with the acquisition of two languages.     

Forgiveness,Reconciliation, and Mechila: Integrating the Jewish Concept of Forgiveness Into Clinical Practice

The professional literature diverges in defining the role of forgiveness and reconciliation in counseling regarding how forgiveness and reconciliation are conceptualized from a professional and secular perspective. The Jewish conceptualization of forgiveness is multifaceted; mechila, the forgiveness of debt, is particularly important in providing a framework for forgiveness when the issue of reconciliation is involved. The authors offer an explanation of the Jewish conceptualization of forgiveness and discuss a way to infuse the concept of mechila into counseling practice on a broader level with all clients.     

Surviving the Kosovo Conflict: A Study of Social Identity, Appraisal of Extreme Events, and Mental Well-Being

Our study examined the role of social identity processes in determining how individuals evaluate, deal with, and are affected by severe events of war. We reasoned that for those who experience such events collectively and who identify strongly with their group, primary appraisal will be filtered through the prism of social identity. In a sample of Kosovo Albanians who had survived the armed conflict in 1999, we found that those who were able to evaluate the war as affirming their group identity presented lower levels of depressive mood and anxiety and higher levels of self-efficacy. Furthermore, this process of war appraisal affected the process of secondary appraisal. Specifically, positive war appraisal increased availability of support from close others and reduced the importance of positive individual coping strategies in dealing with extreme events. Conversely, negative war appraisal reduced availability of support from close others and reduced the importance of negative coping strategies in dealing with extreme events.     

Neurobiological Markers of Illness Onset in Psychosis and Schizophrenia: The Search for a Moving Target

In this review, we describe neuropsychological and brain imaging findings in the early stages of psychosis and schizophrenia. We focus on recent clinical high-risk studies and consider whether the evidence supports these as ‘endophenotypes’ of a vulnerability to the illness or as ‘biomarkers’ of illness onset and transition. The findings suggest that there are a number of processes at psychosis onset that may represent biomarkers of incipient illness. These neurobiological indices particularly implicate the integrity of frontal and temporal cortices, which may or may not be related to the genetics of psychosis (i.e. potential ‘endophenotypes’). However, these brain regions are dynamically changing during normal maturation, meaning that any putative neurobiological markers identified at the earliest stages of illness may be relatively unstable. We suggest that, while such measures may be readily identified as potential neurobiological markers of established illness, they are inconsistent at (or around) the time of illness onset when assessed cross-sectionally. Instead, identification of more valid risk markers may require longitudinal assessment to ascertain normal or abnormal trajectories of neurodevelopment. Accordingly, we assert that the current conceptualisations of potential biomarkers and/or ‘endophenotypes’ for schizophrenia may need to be reconsidered in the context of normal and abnormal brain maturational processes at the time of onset of psychotic disorders.