Visuospatial processing in memory for word location in writing

Two experiments examined how visuospatial processing engaged during text composition intervenes in memory for word location. Experiment 1 showed that in contrast to participants who performed a spatial task concurrently with composing a text, participants who performed a concurrent visual task recalled fewer word locations after the composition. Consequently, it is hypothesized that writers process the written text in order to visually represent its physical layout, and that this representation is then used when locating words. Experiment 2 tested this hypothesis by comparing a standard composition condition (with the written trace) with a condition in which the written trace was suppressed during composition, and with a condition without written trace and with added visual noise. Memory for word location only decreased with visual noise, indicating that construction of the visual representation of the text does not rely on the written trace but involves visual working memory.     

The relationships between personality traits and one-year outcomes in patients with major depressive disorder without psychotic features

Introduction

Besides the intensity of depression, the main predictors of the outcome of a depressive episode are the comorbid disorders and certain personality traits.

A study of EEG coherence in DCD children during motor synchronization task

This paper investigates the hypothesis that the coordination difficulties of DCD children are associated with an increased coherence in the cortical motor regions, which persists with age. Forty-eight children participated in the study (24 DCD and 24 Controls). Their ages ranged from 8 to 13 years, divided into three groups (8-9, 10-11, and 12-13 years old). Children were required to perform finger flexion or extension either in synchrony or in syncopation with a rhythmic metronome, while a 32-channel EEG was recorded. Along with stability measures of motor performance, we analyzed the spectral EEG coherence between intrahemispheric (left frontal/left central; left central/left parietal) and interhemispheric (left central/right central) sites. Spectral coherence assesses functional coupling between distant areas of the brain. Two frequency bands related to sensorimotor activation were chosen: alpha (8-12 Hz) and beta (12-30 Hz). The synchrony task was chosen as a rest condition against which the two syncopation conditions at 0.5 Hz and 1.3 Hz were contrasted. For intrahemispheric comparison, 8-9-year-old DCD children showed that coherence between fronto-central regions increased for both rhythms and conditions, as compared to controls. No difference was found for interhemispheric comparisons. As frontal sites are related to motor planning, our results suggest that youngest DCD children were forced to maintain a high level of pre-programming to compensate for the difficulties caused by the perceptual-motor requirements of the task in light of their coordination disorder.     

Structure factorielle et qualités psychométriques de la version française du questionnaire d’auto-description pour adultes (adult self-report) d’Achenbach et Rescorla

Because of the frequent comorbidities, clinicians need to get a comprehensive picture of the behavioral and emotional problems presented by their patients, but structured interviews allowing for such a survey are time consuming and sometimes tedious, and no French language self-report questionnaire is currently available. The aim of the present study was to verify the factorial structure and some psychometric properties of the French version of the Achenbach and Rescorla's (2003) adult self-report (ASR), which is designed to assess 120 behavioral and emotional problems. We collected ASR forms completed by 905 students enrolled in a university having schools of humanities, social sciences, sports, laws and economics (699 women, 669 students in psychology, 862 aged 18–35 years). The confirmatory factor analyses yielded the expected eight-factor structure (RMSEA = .037; CFI = .931). The internal consistency was similar to the original, and the test-retest reliability was satisfactory. French subjects, especially men, scored higher than their American counterparts on several scales, but the effect sizes were small to medium. French women and men's scores differed only on the Rule-Breaking Behavior scale, with men scoring higher; however, students in psychology, whichever was their gender, scored higher than other students on scales measuring internalizing problems and attention problems. Despite some limitations, the main of which is that all participants were students from the same university, these results speak in favor of the use of the French adult self-report in both research and clinical practice.     

Encoding, consolidation, and retrieval of contextual memory: differential involvement of dorsal CA3 and CA1 hippocampal subregions

Studies on human and animals shed light on the unique hippocampus contributions to relational memory. However, the particular role of each hippocampal subregion in memory processing is still not clear. Hippocampal computational models and theories have emphasized a unique function in memory for each hippocampal subregion, with the CA3 area acting as an autoassociative memory network and the CA1 area as a critical output structure. In order to understand the respective roles of the CA3- and CA1-hippocampal areas in the formation of contextual memory, we studied the effects of the reversible inactivation by lidocaine of the CA3 or CA1 areas of the dorsal hippocampus on acquisition, consolidation, and retrieval of a contextual fear conditioning. Whereas infusions of lidocaine never impaired elementary tone conditioning, their effects on contextual conditioning provided interesting clues about the role of these two hippocampal regions. They demonstrated first that the CA3 area is necessary for the rapid elaboration of a unified representation of the context. Secondly, they suggested that the CA1 area is rather involved in the consolidation process of contextual memory. Third, they showed that CA1 or CA3 inactivation during retention test has no effect on contextual fear retrieval when a recognition memory procedure is used. In conclusion, our findings point as evidence that CA1 and CA3 subregions of the dorsal hippocampus play important and different roles in the acquisition and consolidation of contextual fear memory, whereas they are not required for context recognition.     

Evaluating the coordination dynamics of handwriting

This study aims to test the hypothesis that handwriting is governed by the dynamics of non-linear coupled oscillators. Accordingly, its first goal is to identify preferred, basic graphic shapes corresponding to spontaneously stable combinations of the two frequency-locked oscillatory x-y components of the trajectories. Six participants were required to produce 26 ellipsoids of varying eccentricities and orientations presented consecutively on a graphic tablet. These shapes corresponded to a systematic manipulation of the relative phase and the relative amplitude of the oscillators by a constant step. Results showed that among those, only eight ellipsoids were produced in a spontaneous and stable fashion. They were characterized by attraction of nearby shapes, and by a higher accuracy and velocity. Alike all periodic motion, graphic skills, hence handwriting, exhibit preferred coordination patterns, which can be ascribed to the non-linear coupling of two oscillators.     

Can animation compensate for temporal processing difficulties in deaf people?

This article addresses the issue of animation as an aid for temporal processing difficulties in deaf people learning the Highway Code. A decision-making task involving static or animated road situations was performed by 21 deaf and 24 hearing participants. They were confronted with four types of driving situations (overtaking, negotiating roundabouts, highways, and intersections) and had to decide whether or not to proceed. Participants were presented with two different formats (static vs. animated) and two levels of difficulty (simple vs. complex). Results showed that deaf participants had poorer performances in the static condition than hearing participants. Performance was better in the animated condition than in the static condition, especially in deaf participants. The benefits of animation were greater in complex situations for all participants. Decisions made on dynamic road situations were facilitated by the presence of spatiotemporal dimensions. These proved helpful to deaf candidates who have difficulties in this particular area.     

Facial expressions of emotions: a methodological contribution to the study of spontaneous and dynamic emotional faces

This paper addresses methodological considerations relevant to nonverbal communication of emotion research. In order to gather more information about the interpretations given to spontaneous and dynamic facial expressions, two main objectives guide the present exploratory research. The first one is to obtain naturalistic recordings of emotional expressions in realistic settings that are ‘emotional enough’. The second one is to address the issue of dynamic judgments of facial expressions of emotion, that is real-time emotional recognition. An innovative device has been created for this specific purpose. Results show that, although the social nature of the eliciting situation is minimal, the experience of some emotions is reflected on the encoders' faces while being covertly videotaped in natural conditions. Moreover, results show the utility to investigate dynamic emotional judgments of spontaneous and dynamic expressions since observers seem to be sensitive to the slightest facial expression change in making their emotional judgments. A promising paradigm is thus proposed for the study of the dynamics of real-time nonverbal emotional interaction. Copyright © 2007 John Wiley & Sons, Ltd.     

Structure factorielle et qualités psychométriques du questionnaire d’auto-évaluation pour adolescents (Youth Self-Report) d’Achenbach et Rescorla

IntroductionRecent research on the prognostic significance of subthreshold comorbid disorders highlighted the need for instruments allowing for the comprehensive exploration of symptomatology of adolescents.ObjectiveTo verify the factor structure and psychometric properties of the Achenbach and Rescorla's Youth Self-Report French translation, which allows this investigation.MethodWe had 1450 adolescents 11–17- year old (747 girls) complete the YSR in secondary schools in the Paris metropolitan area.ResultsConfirmatory Factor Analyses and Exploratory Structural Equation Modeling supported the 8-syndrome structure. However, since ESEM allows cross-loadings, the number of indicators for each factor in the ESEM models is much higher than in the CFA models. Internal consistency and test-retest reliability were satisfactory, and multigroup analyses confirmed the metric and scalar invariance across age and gender of most of the items examined (70 out of 89). We can therefore affirm that girls score lower on Social problems than boys, 15–17-year-old adolescent score higher on Thought problems, Attention problems, and Rule-Breaking Behavior than the younger, and these differences are substantive and independent of differential item functioning.ConclusionThese results are likely to encourage the use of YSR in research and clinical practice with French-speaking adolescents.