Novel visual illusions related to Vasarely's 'nested squares' show that corner salience varies with corner angle

Vasarely's 'nested-squares' illusion shows that 90 degrees corners can be more salient perceptually than straight edges. On the basis of this illusion we have developed a novel visual illusion, the 'Alternating Brightness Star', which shows that sharp corners are more salient than shallow corners (an effect we call 'corner angle salience variation') and that the same corner can be perceived as either bright or dark depending on the polarity of the angle (ie whether concave or convex: 'corner angle brightness reversal'). Here we quantify the perception of corner angle salience variation and corner angle brightness reversal effects in twelve naive human subjects, in a two-alternative forced-choice brightness discrimination task. The results show that sharp corners generate stronger percepts than shallow corners, and that corner gradients appear bright or dark depending on whether the corner is concave or convex. Basic computational models of center surround receptive fields predict the results to some degree, but not fully.     

Variables morfológicas en el procesamiento del lenguaje

Resumen

En este artículo se revisan los principales estudios acerca del papel que pueden desempeñar las variables de tipo morfológico en la organización del léxico interno y en el acceso a la información contenida en el mismo. Más en concreto, se trata de ver hasta qué punto las relaciones derivativas entre palabras contribuyen a una simplificación del inventario mental de entradas léxicas. Para ello, se examinan las dos hipótesis alternativas fundamentales que han sido propuestas a este respecto: la hipótesis de independencia, según la cual a cada palabra le correspondería una entrada léxica distinta y la hipótesis derivacional, según la cual habría una misma entrada léxica para cada familia de palabras relacionadas morfológicamente. Los datos procedentes de las distintas áreas de la investigación psicolinguistica (comprensión, producción, adquisición y trastornos del lenguaje) parecen apoyar esta segunda hipótesis, aunque se hace notar la falta de resultados cruciales que permitan descartar la hipótesis de independencia o alguna versión modificada de la misma. Sin embargo, aun en el caso de qùe hubiera entradas léxicas distintas, sería preciso postular algún mecanismo adicional que diera cuenta de la información morfológica que utiliza el sujeto en el procesamiento de palabras.     

Overt head movements moderate the effect of depressive symptoms on mood regulation

A dysfunction in the regulation of negative mood states is one of the core symptoms of depression. Research has found that levels of depression are associated with the intensity of the mood-regulation deficit. The present study aimed to explore the role the body plays in mood-regulation processes. More specifically, we studied whether head movements can influence mood persistence in dysphoric states. Subsequent to a sad-mood induction, participants were presented with a set of positive pictures immediately after performing either vertical (i.e., nodding) or lateral (i.e., shaking) head movements. We considered changes in mood from before to after the experimental task as an index of the effectiveness of mood regulation. As expected, the results showed that higher initial levels of depressive symptoms were associated with greater persistence of sad mood. More importantly, this association was present in participants who shook their heads, but not in those who nodded. These results show that body movements can contribute to mood-regulation processes, thus expanding our knowledge of the psychopathology of mood disorders.     

Living Beyond the Other

This article attempts to bring philosophy to clinical psychological practice by applying philosophical concepts to autobiographical experience. Through reflective engagement with personal narratives, the author tells three personal stories to illustrate ways in which the concept of Dasein in the philosophy of Martin Heidegger and Emmanuel Levinas’s development of an ethical responsibility to the Other, in tandem with thanatology, helped the author come to terms with existential dilemmas evoked by the deaths of others.     

The dark side of technologies: Technostress among users of information and communication technologies

This paper tests the structure and the predictors of two psychological experiences of technostress associated with the use of information and communication technologies (ICT), i.e., technostrain (users report feelings of anxiety, fatigue, scepticism and inefficacy beliefs related to the use of technologies) and technoaddiction (users feel bad due to an excessive and compulsive use of these technologies). The study included a sample of 1072 ICT users (N = 675 nonintensive ICT users and N = 397 intensive ICT users). Results from multigroup confirmatory factor analyses among non‐intensive and intensive ICT users showed, as expected, the four‐factor structure of technostrain in both samples. Secondly, and also as expected, confirmatory factorial analyses revealed that technostress experiences are characterized not only by technostrain but also by an excessive and compulsive use of ICT. Moreover, multiple analyses of variance showed significant differences between non‐intensive and intensive ICT users (1) in the dimensions of technostress and (2) in specific job demands and job/personal resources. Finally, linear multiple regression analyses revealed that technostrain is positively predicted by work overload, role ambiguity, emotional overload, mobbing and obstacles hindering ICT use, as well as by lack of autonomy, transformational leadership, social support, ICT use facilitators and mental competences. Work overload, role ambiguity and mobbing, as well as the lack of emotional competences, positively predict technoaddiction. Theoretical and practical implications, in addition to future research, are discussed.     

Family routines and rituals in the context of chronic conditions: A review

This paper is a systematic review of 39 empirical studies on family routines and rituals in the context of a chronic condition of a family member. The search strategy encompassed a wide spectrum of chronic conditions affecting family members from childhood/adolescence to adulthood. Twenty quantitative, 13 qualitative, 3 mixed‐methods, and 3 intervention studies published between 1995 and 2012 were reviewed. A conceptual framework of routines and rituals as key elements of family health was adopted, resulting in three main findings. First, a chronic condition in a family member impacted the frequency and nature of family's routines and rituals. Second, these whole‐family interactions held important functions for individuals and families, constituting strategic resources in the condition's management and opportunities for emotional support exchanges, and providing the family with a sense of normalcy amid the challenges posed by chronic conditions. Third, family routines and rituals were linked to positive health and adaptation outcomes for both patients and family members. Implications for future research include the need for the distinction between routines and rituals against a conceptual background, use of validated assessment methods, and empirical examination of predictors of changes in routines and rituals throughout the course of the condition and of the mechanisms linking these family events to positive outcomes. Conclusions support the inclusion of routines and rituals in a family‐centered care approach to the understanding and treatment of chronic conditions.     

Collective Action and Social Change: Examining the Role of Representation in the Communication between Protesters and Third‐party Members

Within social psychology, it has been proposed that to understand how collective action creates social change, it is relevant to examine the role that other members of society can have on it. However, few studies have empirically examined that. We argue that for that task, it is useful, first, and as some authors have already argued, to go beyond the sole analysis of the two‐sided inter‐group relations creating collective action; and second, to articulate this with contributions from social representations theory, which recognises that to understand social change, we need to examine communicative practices, or how communication is used between collective action's actors and other actors to re‐present identities. We analyse the protests by a movement of residents from a Lisbon neighbourhood that protested against the transformation of a neighbourhood's convent. Besides discussing this transformation with local authorities and failing to achieve its aims through that, the protesters also discussed it with other citizens. The analysis of this debate shows that the arguments and actions they used change throughout time, from local to global, as the latter were the ones more endorsed by other citizens and thus those that could help the protesters to achieve their goals. Copyright © 2014 John Wiley & Sons, Ltd.     

Use of the "Mental Health Inventory - 5" with Portuguese 10-15 years old

The present study describes the psychometric properties of the Portuguese version of the Mental Health Inventory-5 for use with young adolescents. A sample of 367 Portuguese students (aged 10-15 years) completed the Portuguese-language versions of Mental Health Inventory-5 (MHI-5; Berwick et al., 1991), Children's Hope Scale (CHS; Snyder et al., 1997), Students' Life Satisfaction Scale (SLSS; Huebner, 1991a), and Global Self-Worth Sub-scale (Harter, 1985). Analysis of readability, reliability (internal consistency and 1-year stability), factor structure, and criterion-related validity suggested that the MHI-5 can be appropriately used in this age group. Implications of the findings are discussed.     

Utility of a statistical model of cognitive styles in attention deficit hyperactivity disorder

The purpose of this study was to determine the best statistical model of cognitive styles, based on the MFFT-20, CEFT and Stroop tests to predict attention deficit hyperactivity disorder (ADHD), analyzing the validity of the model for the diagnosis of the disease. We studied 100 ADHD cases (DSM-IV criteria) and 100 controls, age ranging between 7 and 11 years. Controls were randomly recruited and matched in age, gender and sociodemographic area with ADHD cases. On average, ADHD cases showed more impulsiveness (d: 1.28), less cognitive flexibility (d: 0.91) and more field dependence (d: 1.62) than controls. The logistic regression model that predicts ADHD best is made up of age, CEFT, MFFT-20 and Stroop tests and the formula derived from the model shows 85% sensitivity and 85% specificity for ADHD, regarding the DSM-IV criteria as the standard. The statistical model of cognitive styles presents valid indicators to diagnose ADHD, contributing to an increase in the objectivity of its analysis.