[4 phot. de dolmens de la région de Saint-Nectaire, dolmens de Saint-Nectaire-le-Bas, de Saillens, de la Chaux de Froidefond, de Sapchat, s.d., don du docteur Verrier au prince Roland Bonaparte]

Donateur : Bonaparte, Roland (1858-1924)

Schizotypy and hemispheric asymmetry: results from two Chapman scales, the O-LIFE questionnaire, and two laterality measures

Schizotypy is a multidimensional personality construct representing the extension of psychosis-like traits into the general population. Schizotypy has been associated with attenuated expressions of many of the same neuropsychological abnormalities as schizophrenia, including atypical pattern of functional hemispheric asymmetry. Unfortunately, the previous literature on links between schizotypy and hemispheric asymmetry is inconsistent with some research indicating that elevated schizotypy is associated with relative right over left hemisphere shifts, left over right hemisphere shifts, bilateral impairments, or with no hemispheric differences at all. This inconsistency may result from different methodologies, scales, and / or sex proportions between studies. In a within-participant design, we tested for the four possible links between laterality and schizotypy by comparing the relationship between two common self-report measures of multidimensional schizotypy (the O-LIFE questionnaire, and two Chapman scales, magical ideation and physical anhedonia) and performance in two computerized lateralised hemifield paradigms (lexical decision, chimeric face processing) in 80 men and 79 women. Results for the two scales and two tasks did not unequivocally support any of the four possible links. We discuss the possibilities that a link between schizotypy and laterality 1) exists, but is subtle, probably fluctuating, unable to be assessed by traditional methodologies used here; 2) does not exist, or 3) is indirect, mediated by other factors (e.g. stress-responsiveness, handedness, drug use) whose influences need further exploration.

Measures of ionicity of alkaline-earth oxides from the analysis of ab initio cluster wave functions

We present an analysis of the M-O chemical bonding in the binary oxides MgO, CaO, SrO, BaO, and Al2O3 based on ab initio wave functions. The model used to represent the local environment of a metal cation in the bulk oxide is an MO6 cluster which also includes the effect of the lattice Madelung potential. The analysis of the wave functions for these clusters leads to the conclusion that all the alkaline-earth oxides must be regarded as highly ionic oxides; however, the ionic character of the oxides decreases as one goes from MgO, almost perfectly ionic, to BaO. In Al2O3 the ionic character is further reduced; however, even in this case, the departure from the ideal, fully ionic, model of Al3+ is not exceptionally large. These conclusions are based on three measures, a decomposition of the Mq+-Oq- interaction energy, the number of electrons associated to the oxygen ions as obtained from a projection operator technique, and the analysis of the cation core-level binding energies. The increasing covalent character along the series MgO, CaO, SrO, and BaO is discussed in view of the existing theoretical models and experimental data.

[Voyage en Italie : 1824-1830]. , Bas-relief au musée [archéologique] de Florence : [motif] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 155

[Voyage en Italie : 1825-1830]. , [Bas-reliefs] À Otricoli ; au Musée de Florence : [trois motifs sculptés] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 156

[Voyage en Italie : 1825-1830]. , [Bas-reliefs] Au Musée : [deux motifs sculptés] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 158

The ability model of emotional intelligence: Searching for valid measures

Current measures of ability emotional intelligence (EI)--including the well-known Mayer-Salovey-Caruso Emotional Intelligence Test (MSCEIT)--suffer from several limitations, including low discriminant validity and questionable construct and incremental validity. We show that the MSCEIT is largely predicted by personality dimensions, general intelligence, and demographics having multiple R's with the MSCEIT branches up to .66; for the general EI factor this relation was even stronger (Multiple R = .76). As concerns the factor structure of the MSCEIT, we found support for four first-order factors, which had differential relations with personality, but no support for a higher-order global EI factor. We discuss implications for employing the MSCEIT, including (a) using the single branches scores rather than the total score, (b) always controlling for personality and general intelligence to ensure unbiased parameter estimates in the EI factors, and (c) correcting for measurement error. Failure to account for these methodological aspects may severely compromise predictive validity testing. We also discuss avenues for the improvement of ability-based tests.

[Voyage en Italie : 1824-1830]. , Villa Medici : [quatre fragments de bas-reliefs] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 633

[Voyage en Italie : 1824-1830]. , [Bas-relief, cippe, deux urnes funéraires] au Musée du Vatican : [quatre motifs] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 618

Synthesis of Work-Zone Performance Measures, TPF-5(081), 2013

The main objective of this synthesis was to identify and summarize how agencies collect, analyze, and report different work-zone traffic-performance measures, which include exposure, mobility, and safety measures. The researchers also examined communicating performance to the public. This toolbox provides knowledge to help state departments of transportation (DOTs), as well as counties and cities, to better address reporting of work-zone performance.

[Voyage en Italie : 1824-1830]. , [Bas-relief orné d'une Victoire] du Piédestal de la Colonne Trajane : [détail] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 503

[Voyage en Italie : 1824-1830]. , [Bas-relief orné de trophées] du Piédestal de la Colonne Trajane : [détail] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 504a

[Voyage en Italie : 1824-1830]. , [Bas-relief orné de trophées] du Piédestal de la Colonne Trajane : [détail] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 504b