Traitement de l’information sociale et profils dans le harcèlement scolaire chez les adolescents

IntroductionBullying is an insidious aggressive behavior characterized by repetitiveness, imbalance of power (a bully dominating his victim) and intent to do harm. People can fall into four different categories: bully, victim, bully/victim or not involved. While numerous researchers have explored the psychopathological consequences of intimidation, few of them have studied the way students with different profiles process social information.ObjectiveThe aim of this study was to explore whether there are specific ways of processing social information in relation to the bullying profile. We refer to the theoretical model of Crick and Dodge (1994) and assume that this information will be processed differently depending on the adolescent's bullying profile.MethodSeven hundred and seventeen (717) secondary school students took part in semi-structured individual interviews and answered several questionnaires related to bullying and social information processing mechanisms.ResultsThe main results show links between social information processing mechanisms and the bullying profiles. Bullies, victims and bully/victims show biases in their social information processing mechanisms at different stages of the model.ConclusionSpecific cognitive patterns seem to exist in relation to the bullying profile. These results provide a better understanding of the way adolescents process social information and open-up new perspectives for preventing bullying in schools.     

Trauma and substance use: the role of defences and religious engagement

Substance use disorders commonly co-occur with posttraumatic stress disorder and are associated with greater impairment. There is some evidence to suggest that different coping strategies, including defence mechanisms and religious forms of coping, may buffer the relationship between trauma and SUDs. The purpose of this study was to evaluate the potential moderating roles of defence mechanisms and religious coping on the already-established relationship between trauma symptoms and substance abuse. Data were gathered from a sample of college students (N?=?380). Trauma symptoms were associated with increased substance use and abuse. The use of immature defences was significantly associated with trauma and substance use. Increased substance abuse was also associated with higher rates of negative religious coping. Individuals who endorsed trauma symptoms were also more likely to use positive and negative religious coping. Defences and coping did not moderate the relationship between trauma and substance use.     

Formation of profuse <c+a> dislocations in deformed calcium-containing magnesium alloys

We report that <c+a> pyramidal slipping could be more easily activated in textured Mg–Ca alloys with increasing Ca contents dissolved in α-Mg matrix under tensile deformation, and it is proposed that the decreased stacking fault energy plays the critical rule. In contrast, only twins and <a> basal dislocations are observed in the compressed samples. The results would provide insight into understanding of the deformation mechanism and designing more ductile Mg alloys.     

Neural synchronization as a hypothetical explanation of the psychoanalytic unconscious

Cognitive scientists have tried to explain the neural mechanisms of unconscious mental states such as coma, epileptic seizures, and anesthesia-induced unconsciousness. However these types of unconscious states are different from the psychoanalytic unconscious. In this review, we aim to present our hypothesis about the neural correlates underlying psychoanalytic unconscious. To fulfill this aim, we firstly review the previous explanations about the neural correlates of conscious and unconscious mental states, such as brain oscillations, synchronicity of neural networks, and cognitive binding. By doing so, we hope to lay a neuroscientific ground for our hypothesis about neural correlates of psychoanalytic unconscious; parallel but unsynchronized neural networks between different layers of consciousness and unconsciousness. Next, we propose a neuroscientific mechanism about how the repressed mental events reach the conscious awareness; the lock of neural synchronization between two mental layers of conscious and unconscious. At the last section, we will discuss the data about schizophrenia as a clinical example of our proposed hypothesis.     

Posttraumatic stress and physical health among adults: The role of coping mechanisms

The purpose of the present study was to examine whether coping mechanisms predict physical health, after controlling for posttraumatic stress disorder (PTSD) symptom clusters in a non-clinical sample of adults. Data were collected from 483 adults through an online survey. Most of the participants (66.7%) reported lifetime exposure to at least one traumatic event. The final sample of this study included 319 trauma-exposed individuals. Results indicated that PTSD symptoms on the avoidance and hyperarousal clusters had significant positive relationships with self-reported physical health symptoms. After controlling for gender and PTSD, denial, behavioral disengagement, and self-blame significantly and positively predicted physical health symptoms.     

The frequency of actions and thoughts scale: development and psychometric validation of a measure of adaptive behaviours and cognitions

This paper describes the development and preliminary psychometric evaluation of an instrument that measures the frequency of adaptive behaviours and cognitions related to therapeutic change during cognitive behavioural therapy (CBT), for symptoms of anxiety and depression. Two studies were conducted. In study one, 661 participants completed an online survey with 28 items targeting adaptive behaviours and cognitions. Exploratory factor analysis performed on part of the sample (n = 451) revealed that a four-factor solution ‘characterised’ the data. This led to the development of a 12-item instrument, the Frequency of Actions and Thoughts Scale (FATS). Confirmatory factor analysis was used to confirm the factor structure of the FATS using the remaining sample (n = 210), which revealed an acceptable model fit. In study two, 125 participants with clinically significant symptoms of anxiety, depression, or both were recruited to an Internet-delivered CBT (iCBT) treatment course. Participants completed the FATS and other measures throughout treatment, after treatment, and at three-month follow-up. Correlations and residual change scores of the FATS and its subscales with measures of anxiety, depression, behavioural activation, and CBT-related skills usage supported the construct validity of the FATS. A significant increase in FATS scores over treatment was also observed. The findings provide preliminary support for the psychometric properties of the FATS, which appears to have utility in research investigating mechanisms of change in CBT.     

群体认同与个体心理健康的关系:调节变量与作用机制

近年来,群体认同与个体心理健康的关系得到了研究者的关注。本研究通过对相关文献的梳理与归纳发现:民族、国家、学校、家庭等不同种类群体的认同,群体认同数量与个体心理健康的关系显著;群体认同与个体心理健康之间的关系受群体认同动机和个体对群体评价的调节,并依赖于自尊、社会支持、控制知觉、归因方式等因素的中介;未来应利用多种方法继续研究群体认同与个体心理健康关系的调节变量与作用机制。     

经济决策中人际信任博弈的理论模型与脑机制

信任是指个体在缺乏足够信息来判断他人动机、意图和行为的情况下,将社会资源交给对方处置并承担相应风险的意愿。作为一种基本的社会信号机制,信任对于发展和维持良好社会关系具有重要作用。借助信任博弈范式,研究者揭示了人际信任的认知神经机制并建构了多种理论,包括背叛厌恶理论、社会规范理论、道德规范理论和默认行为模型。脑成像研究发现信任行为主要涉及内侧前额叶、尾状核、杏仁核和脑岛等脑区,其中内侧前额叶主要参与心理推理、情绪认知与调控等过程,尾状核参与同伴值得信赖性的习得与编码,杏仁核和脑岛则主要参与风险、不确定性和背叛恐惧加工。今后研究应侧重不同理论之间的补充与整合,强化不同脑区之间的功能连接与整体性,并注重信任行为中的个体差异。