Development and Psychometric Evaluation of an Item Bank for Computerized Adaptive Testing of the EORTC Insomnia Dimension in Cancer Patients (EORTC CAT-SL)

To further advance assessment of patient-reported outcomes, the European Organisation of Research and Treatment of Cancer (EORTC) Quality of Life Group has developed computerized adaptive test (CAT) versions of all EORTC Quality of Life Core Questionnaire (QLQ-C30) scales/items. The aim of this study was to develop and evaluate an item bank for CAT measurement of insomnia (CAT-SL). In line with the EORTC guidelines, the developmental process comprised four phases: (I) defining the concept insomnia and literature search, (II) selection and formulation of new items, (III) pre-testing and (IV) field-testing, including psychometric analyses of the final item bank. In phase I, the literature search identified 155 items that were compatible with our conceptualisation of insomnia, including both quantity and quality of sleep. In phase II, following a multistep-approach, this number was reduced to 15 candidate items. Pre-testing of these items in cancer patients (phase III) resulted in an item list of 14 items, which were field-tested among 1094 patients in phase IV. Psychometric evaluations showed that eight items could be retained in a unidimensional model. The final item bank yielded greater measurement precision than the original QLQ-C30 insomnia item. It was estimated that administering two or more items from the insomnia item bank with CAT results in a saving in sample size between approximately 15–25%. The 8-item EORTC CAT-SL item bank facilitates precise and efficient measurement of insomnia as part of the EORTC CAT system of health-related quality life assessment in both clinical research and practice.

     

When Evaluative Adjectives Prevent Contradiction in a Debate

Argumentation - This paper argues that some words are so highly charged with meaning by a community that they may prevent a discussion during which each participant is on an equal footing. These...     

The Effect of Relative Income Concerns on Life Satisfaction: Relative Deprivation and Loss Aversion

Journal of Happiness Studies - Income comparisons are important for individual well-being. We examine the shape of the relationship between relative income and life satisfaction, and test...     

Is the attentional blink effect located in short-term memory?

The attentional blink (AB) effect is characterized by a failure to detect a second target following the identification of a previous target in a RSVP stream. This effect has been attributed to capacity limitations at a central level of visual information processes. Postperceptual models suppose that the AB locus is located in short-term memory. To test this hypothesis, we investigated the influence of a short-term memory deficit on the AB effect in a patient with such a deficit. The three main results of this study are (1) the persistence of an AB effect, (2) a large number of T1 missed identifications and (3) a T2 detection deficit for a specific delay (367 ms). These results indicate that a short-term memory deficit disrupts the processing of each target (T1 and T2) but does not product an abolition of the AB effect.     

The (Un)bearable Educational Lightness of Common Practices: On the Use of Urban Spaces by Schoolchildren

The present paper is about the author??s current research on children??s education in urban contexts. It departs from the rising offer of programmes for school children in out-of-school contexts (e.g. museums, libraries, science centres). It asks what makes these practices educational (and not just interesting, entertaining and/or audience building). Based on Biesta (2006a, 2010) theory of education, the author frames and analyses the educational characteristics of, and possibilities of articulating, in and out-of-school educational practices. This paper aims at understanding if the occasional outing from primary school premises promotes interruptions in the humanist foundations of school. In order to analyse relations between different institutions and professionals (to be) engaged in educational activities and programmes, Nóvoa (2002, 2009) essays will be brought to the discussion, namely his conception of the ??Public Space of Education????as a space where culture, education, arts, sports and leisure are shared responsibilities, and where diverse institutions are networked aiming towards societal pluralism. I argue for the possibility of using cities?? public spaces as contexts with a worldly quality to complexify children??s education. Nevertheless, I draw attention to the unbearable educational lightness that these practices may carry if they do not go beyond the praise of chance; as well as to their unsustainable weight if they perpetually repeat school??s normal orders and add up rational discourses.     

Psychopathy and traumatic stress

This study examined the relationship between psychopathy and traumatic stress. First, a sample of 48 male patients in a security hospital was assessed using the Psychopathy Checklist (Hare, 2003) and the Stanford Acute Stress Reactions Questionnaire (SASRQ; Cardena, Classen, Koopman, & Spiegel, 1996). Linear regression analyses suggested that the affect deficit component of psychopathy was the best negative predictor of avoidance, dissociation, and re-experiencing symptoms. The 13 highest-scoring psychopathy participants were then compared to the 13 lowest-scoring participants. Psychopaths differed from controls in terms of number but not type of traumatic events. They obtained significantly lower SASRQ total score, reflecting a lower level of traumatic symptomatology. The results are discussed in connection with the emotional deficit component of psychopathy.     

Characterizing variation in the functional connectome: promise and pitfalls

The functional MRI (fMRI) community has zealously embraced resting state or intrinsic functional connectivity approaches to mapping brain organization. Having demonstrated their utility for charting the large-scale functional architecture of the brain, the field is now leveraging task-independent methods for the investigation of phenotypic variation and the identification of biomarkers for clinical conditions. Enthusiasm aside, questions regarding the significance and validity of intrinsic brain phenomena remain. Here, we discuss these challenges and outline current developments that, in moving the field toward discovery science, permit a shift from cartography toward a mechanistic understanding of the neural bases of variation in cognition, emotion and behavior.     

Liquid zinc embrittlement of a high-manganese-content TWIP steel

The cracking resistance of a twinning induced plasticity (TWIP) steel with high-manganese content has been studied in relation to the liquid metal embrittlement phenomenon. This phenomenon was investigated by hot tensile tests carried out on electrogalvanised specimens using a Gleeble® simulator at temperatures ranging from 600°C to 1000°C. The results show that this steel can be embrittled by liquid zinc within a limited range of temperature depending on strain rate.     

Visual and auditory facilitation in auditory spatial localization

It has previously been shown that adults localize unseen auditory targets more accurately with their eyes open than closed. The interpretation usually proposed to explain this phenomenon is that auditory spatial information is referred or translated to a visual frame of reference. The present experiments show that the presence of an auditory reference point facilitates auditory localization judgements in the same manner as a visual reference point does. Although our results do not support the visual frame of reference hypothesis, they suggest that the auditory and the visual modalities are strongly linked in their localizing processes.     

Charismatic leadership,environmental dynamism,and performance

Most studies relating charismatic leadership to performance have limitations concerning selection of criterion measures and investigation of moderators. Therefore, this study examines relationships between charismatic leadership and multiple performance outcomes under different levels of environmental dynamism (i.e., level of environmental uncertainty, degree of technological change) and per type of Chief Executive Officer (firm owner versus managing director). Results revealed that charismatic leadership was positively related to common-source and multi-source perceptual performance outcomes (i.e., subordinates' positive work attitude) and to organization profitability, but unrelated to organization liquidity and solvency. The relationship between charismatic leadership and perceptual performance was stronger under conditions of environmental uncertainty than under conditions of environmental certainty. Furthermore, charismatic leadership was more strongly related to organization profitability for firm owners than for managing directors who do not own their firm. The results are discussed and several potentially fruitful avenues for future research on charismatic leadership and employee as well as organizational performance are presented.