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The role of mental imagery, dysfunctional attitudes and perfectionism in mood elevation in bipolar disorders
No full textAims: previous studies have looked at how mental imagery, dysfunctional attitudes and perfectionism contributed to hypomanic/manic symptoms in bipolar disorders (BD). This study explored whether positive mental imagery induced higher mood changes in people with BD and whether risks of BD, general use of imagery, perceived vividness of imagery, dysfunctional attitudes and perfectionism positively predicted mood changes after generating positive imagery.Methods: participants (23 participants with BD and 58 controls) completed a questionnaire, which included the Mood Disorder Questionnaire, Hypomanic Personality Scale, Dysfunctional Attitudes Scale, Multidimensional Perfectionism Scale, Spontaneous Use of Imagery and a single-item vividness measure. A positive imagery task (PIT) guided participants to generate positive mental imagery. Participants’ mood and activation were measured both before and after the PIT.Results: the BD group experienced higher activation than the control group. Both groups experienced no difference in mood and lower activation after the PIT. After controlling for measures at baseline, higher risks of BD and lower levels of dysfunctional attitudes predicted higher post-PIT mood; higher general use of imagery predicted higher post-PIT activation. Vividness and perfectionism did not predict either mood or activation.Conclusion: positive mental imagery does not amplify high mood. Risks of BD, general use of imagery and dysfunctional attitudes predict mood changes after positive imagery generation. These findings contribute to the understanding of BD and the application of psychotherapies for BD. Further investigations should be conducted to address the limitations of this study
The role of mental imagery, dysfunctional attitudes and perfectionism in mood elevation in bipolar disorders
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La relation entre flux d'entrées nets et performance des fonds. Une étude appliquée au cas des opcvm actions français
No full textThis article studies the flow-performance relationship in French equity mutual funds between 1992 and 2007. Using standard errors with clustering in two dimensions we find a convex relation between current net flows and past relative performance. For high performance funds, ranks of performance influence positively the flows of funds whereas for the medium or low performing funds, there is no significant effect of past performance. However, the relation seems qualitatively lower than in the American case. This is probably due to the specificities of French market, where most funds are distributed by banks. We also show that investors seem to consider rankings within funds categories defined by their geographic specialisation. They also appear concerned about short horizons relative performance and do not seem to consider the funds risk level. Moreover, convexity is more important for the ?young? funds. Lastly, the convexity appears only in the standard market segments (France and Europe). Classification JEL : G11, G23.
La relation entre flux d entrées nets et performance des fonds : une étude appliquée au cas des OPCVM actions français
Get PDFCet article étudie la relation entre les flux nets et la rentabilité relative des fonds actions français pendant la période 1992-2007. En utilisant la méthode des doubles clusters, on montre qu'il existe une relation convexe entre les flux nets et le rang de performance pour l'année précédente. Ainsi, au sein des fonds « stars » le rang de performance influence positivement l'attractivité du fonds, alors que pour les fonds de performance relative moyenne ou faible, il n'y a pas d'effet des performances passées. Nous montrons aussi que les calculs de rentabilité se fondent vraisemblablement sur des horizons courts. De plus comme dans le cas américain, la convexité est plus importante pour les « jeunes » fonds français. Toutefois, la relation est quantitativement et qualitativement moins marquée que dans le cas américain, ce qui traduit probablement les spécificités françaises en matière de distribution des fonds. Enfin, la convexité n'apparaît que dans les segments les moins spécialisés du marché (France et Europe) ce qui pourrait traduire le faible degré de sophistication de leur clientèle d'investisseurs.Fonds de placement
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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