Ali Oker

Université de Reims Champagne-Ardenne | URCA · Laboratoire de Psychologie C2S "Cognition Santé Socialisation"

Individuals with psychotic disorders such as schizophrenia may be more vulnerable during pandemics, but research on this topic is limited. This study examined COVID-19 impact on a population affected by schizophrenia during the COVID-19 pandemic. Levels of psychological distress and COVID-19-related behaviours, from the Covid-related Thoughts and B...

Abstract Objectives: The COVID-Related Thoughts and Behavioral Symptoms (Cov-Tabs) is a self-reported questionnaire developed to identify the presence of psychological distress and anxiety-related behavior associated with COVID-19. This scale has been used since the first episodes of mass contamination of COVID-19 disease in the USA without psycho...

La littérature publiée antérieurement rapporte que les faux souvenirs ou les problèmes de mémoire peuvent se retrouver chez les personnes ayant de forts traits de personnalité schizotypique. Cependant, les conclusions de ces études se fondaient exclusivement sur de l’information obtenue verbalement. Pour donner suite aux recherches antérieures, la...

Les déficits d'attribution d'intention dans la schizophrénie sont bien documentés dans les études comportementales ainsi que dans les études de potentiels évoqués cognitifs. Selon une hypothèse, ces déficits pourraient être dus à un déficit précoce de l'attention visuelle, qui pourrait altérer la sélection et le traitement des indices sociaux perti...

Parmi les voies d’étude privilégiées qui consiste à s’interroger sur les facteurs à l’origine du développement psychologique des personnes, deux ensembles de facteurs sont principalement distingués : d’une part, des facteurs relevant des personnes elles-mêmes, souvent considérés comme d’origine génétique, et d’autre part, des facteurs relevant de l...

The Research Topic presented here emphasizes the theoretical and methodologicalcontributions of the use of virtual reality to study human cognition. At a first glance, theuse of novel technologies, such as virtual reality can be seen only as broader means ofproviding richer and multimodal stimuli for experimental psychology. However, it should best...

While the debate regarding the embodied nature of human cognition is still a research interest in cognitive science and epistemology, recent findings in neuroscience suggest that cognitive processes involved in social interaction are based on the simulation of others' cognitive states and ours as well. However, until recently most research in socia...

Embodied Social Cognition: Why studying it with virtual agents? 5th International Conference on Interactivity, Language & Cognition “Integrating Quantitative and Qualitative Methods in the Cognitive and Language Sciences”

Previous research has highlighted age-related differences in social perception, in particular emotional expression processing. To date, such studies have largely focused on approaches that use static emotional stimuli that the participant has to identify passively without the possibility of any interaction. In this study, we propose an interactive...

Virtual tutors are a promising technology, providing a rich interactive environment for children to learn in. However, the question of how they should behave in order to enhance pupils’ motivation remains unanswered. Using an embodied conversational agent platform, we tested human-computer interactions with 22 children aged 9–11 years. Children per...

Excessive alcohol use among adolescents has become a pressing challenge among Western societies. Accordingly, one of the current research objectives is to identify the processes associated with this harmful habit. Although numerous studies have underlined the role of executive and motivational processes, few have explored emotional and interpersona...

The need for experimentation of facial expression recognition in a more ecological manner necessitates the use of multimodal, interactive experimental stimuli. At the same time, the prerequisite of reproducibility of results and controlled conditions is still mandatory. An embodied conversational agent (ECA) is a pertinent framework that meets all...

Study of social cognition implies emotional processing (prosody, faces, facial expression, etc.) in a multimodal environment with verbal and non-verbal communication underling relation between emotion- cognition-empathy Most persons presenting social cognition impairments have limited social interactions that contribute to social isolation (Kohler...

With regards to the neurocognitive deficits and cognitive bias of schizophrenic disorders, it may be hypothesized that these patients suffer a deficit in recognizing helping intentions in others. To investigate help recognition, new technologies allowing to control an interaction with virtual affective agents were used with an adaptation of a previ...

The present topic emphasizes the parallel development of concepts in social neurosciences and in other domains such as computer science, affective computing, virtual reality development, and even hardware technologies. While several researchers in neurosciences pointed out the necessity to consider naturalistic social cognition (Zaki and Ochsner, 2...

Advances in the use of virtual affective agents for therapeutic purposes in mental health opened a research avenue to improve the way patients interpret other's behavior as helpful instead of menacing. Here, the authors propose an original paradigm based on affective computing and virtual reality technologies requiring the assessment of helping int...

In recent decades, many studies have shown that schizophrenia is associated with severe social cognitive impairments affecting key components, such as the recognition of emotions, theory of mind, attributional style, and metacognition. Most studies investigated each construct separately, precluding analysis of the interactive and immersive nature o...

Un phénomène particulièrement avéré en mémoire est l’observation même que si un élément spécifique semble être différent ou rare d’une certaine manière des autres éléments présents dans le même contexte d’encodage, cet élément est susceptible d’être mieux rappelé. Ce phénomène, appelé l’effet von Restorff ou l’effet d’isolation, est connu depuis 19...

La pratique psychiatrique est amenée à intégrer de plus en plus de moyens spécialisés d’évaluation des capacités cognitives des patients schizophrènes. Évaluer ces facultés revêt un intérêt tout particulier du fait de leurs corrélations significatives, même partielles, avec le pronostic fonctionnel, autrement dit le handicap. De plus, les mesures d...

Le débat actuel pose l’hypothèse d’accès langagier sélectif ou non sélectif lors de la reconnaissance lexicale chez les locuteurs bilingues (Grainger, 1991 ; Dijkstra & Van Heuven, 2002 ; Kroll, Bobb, Misra & Guo, 2008). Que se passe-t-il pour les mots dont la prononciation et le sens sont identiques dans les deux langues (items congénères) ? Il fa...

The aim of this article was to provide experimental evidence that classical dissociation between levels of consciousness associated with memory retrieval (i.e., implicit or explicit) can be explained in terms of task dependency and distinctiveness of traces. In our study phase, we manipulated the level of isolation (partial vs. global) of the memor...

The main objective of our study was to confirm that the distinctiveness effect could emerge in implicit memory tasks and to show that the specificity of an item can be varied by manipulating the contextual information associated with the item during encoding. In an encoding phase and test phase, participants had to categorize target words as referr...

The aim of the present study was to show that the probability of an item being retrieved is proportional to its spatial distinctiveness, and that this distinctiveness effect can be obtained in an implicit memory task. The participants were presented with two phases in which they had to categorise pictures of objects as either ‘‘kitchen utensils’’ o...

Le travail de recherche présenté dans cette thèse considère la mémoire humaine comme un système unique et non abstractif qui reflète l’ensemble de nos expériences sous forme de traces épisodiques multimodales. Les objectifs de cette thèse sont multiples, mais le principal est de montrer qu’un effet robuste de la mémoire, l’effet de distinctivité, p...

The aim of the present research was to study the processes involved in knowledge emergence. In a short-term priming paradigm, participants had to categorize pictures of objects as either "kitchen objects" or "do-it-yourself tools". The primes and targets represented objects belonging to either the same semantic category or different categories (obj...