Grégory Michel

University of Bordeaux

Introduction: Muscle dysmorphia, a theme mainly investigated by Anglo-Saxon research, is a specific body dysmorphic disorder that characterizes individuals who think they are insufficiently muscular and lean. Understudied in francophone countries, tools translated and validated in French to measure the symptomatology of muscle dysmorphia remain rar...

Résumé Au cœur de la controverse, la dysmorphie musculaire subit encore de nombreux questionnements quant à son appartenance nosographique. La légitimité de son entrée dans le DSM-5, en 2013, en tant que dysmorphophobie corporelle spécifique, fut rapidement associée à un manque de rigueur méthodologique face au non-respect des guidelines nécessaire...

Introduction. – Ces dernières décennies, les points de vue divergents dans le domaine de la recherche sur la dysmorphie musculaire ont permis de penser cette pathologie et ses déterminants avec plusieurs approches nosographiques. Malgré sa classification dans le DSM-V au sein des dysmorphophobies corporelles spécifiques, un déterminant transnosogra...

Résumé Au cours de ces dernières années, le nombre de publications au sujet de l’expression et de l’identification des traits psychopathiques chez l’enfant et l’adolescent n’a cessé de croître. Le statut qu’il s’agit d’accorder à ces caractéristiques de personnalité suscite en effet de vives discussions au sein d’une littérature internationale tend...

Avec une prévalence de 2.3% chez les enfants français scolarisés entre 6 et 16 ans, le haut potentiel intellectuel représente un défi en pédopsychiatrie (Delaubier, 2002). Des dyssynchronies peuvent apparaître dans les différents domaines de l’intelligence, associées à des symptômes éclectiques : hypersensibilité, anxiété, dépression, trouble défic...

Rough‐and‐tumble play (RTP), also known as play fighting, is a common form of play frequently reported and studied by researchers. However, one important limitation of past research in the area of RTP has been the neglect of the adolescence period. Consequently, little is known about the function of adolescent RTP as well as about clinical characte...

Objectives. This study aimed to (1) disentangle the clinical symptoms profiles of children with Attention Deficit Hyperactivity Disorder (ADHD) through hierarchical clustering and (2) assess the functional impairment associated with each cluster. Background and aims. ADHD is a neurodevelopmental disorder that has high rates of comorbidity. Both ext...

Recouvrant la composante affective du construit psychopathique, les traits dits Callous-Unemotional (CU) se caractérisent par une indifférence et une insensibilité émotionnelle, une froideur affective, un manque de culpabilité et de remords, une quasi-absence d’empathie, ainsi qu’une tendance à charmer associée à une superficialité des affects (Fri...

Objectives: The aim of the study was to estimate the association between self-esteem and subsequent self-rated health during college years, taking into account a wide range of potential confounders. Design: Prospective longitudinal study. Setting: The French i-Share cohort. Participants: The sample consisted of 1011 college students. Primar...

Objectives: The constant increase of research around the world shows the need to promote the implementation and dissemination of early intervention strategies that help to prevent rise, crystallization and aggravation of the antisocial and violent problems encountered by some young people. However, debates are raging — in scientific, clinical and e...

Objectives: To examine the demographic and health risk factors associated with participation in the choking game (CG), a dangerous and potentially fatal strangulation activity in which pressure is applied to the carotid artery to temporarily limit blood flow and oxygen. Methods: We obtained data from 2 cross-sectional studies realized respective...

La dysmorphie musculaire est une dysmorphophobie corporelle spécifique se manifestant par une obsession idéative concernant le fait de ne pas être suffisamment musclé, une altération du fonctionnement quotidien ainsi qu’une détresse clinique significative. De par ses proximités symptomatologiques, la littérature internationale s’est majoritairement...

This article examine the studies carried out between 1992 and 2017 on the relationship between psychopathy and the risk of sexual recidivism. While the majority of the research seems to show a positive association between psychopathic personality and the risk of recidivism in the broad sense, the nature of this relationship is much more complex wit...

Introduction: La Dysmorphie Musculaire (DM) est un sujet d’étude contemporain. Officiellement inscrite dans le DSM- 5 en 2013 au sein des dysmorphophobies spécifiques « muscle dysmorphia » elle ne possède pas encore d'entité nosographique à part entière. Methodologie: À l'aide de la méthodologie Prisma et du mot-clé « muscle dysmorphia » nous avons...

Objectives : Several studies have suggested that children and adolescents with Attention Deficit Hyperactivity Disorder (ADHD) are at a high risk of accidents and unintentional injuries compared with those without it. However, few have investigated the influence of comorbidity in the link between injuries and ADHD whereas both externalizing and int...

Objectives: This study sought to assess facial emotion recognition deficit in children with Attention Deficit/Hyperactivity Disorder (ADHD) and to test the hypothesis that it is increased by comorbid features. Method: Forty children diagnosed with ADHD were compared with 40 typically developing children, all aged from 7 to 11years old, on a comp...

Résumé Les conduites à risques chez les enfants et les adolescents sont un réel problème de santé publique tant leurs conséquences en termes de morbidité que de mortalité sur le court terme et le long terme sont désastreuses. Dans cet article, nous définirons dans un premier temps les conduites à risques (CAR) puis nous soulignerons l’importance du...

Background: Exposure to peer victimization is relatively common. However, little is known about its developmental course and its effect on impairment associated with mental illnesses. We aimed to identify groups of children following differential trajectories of peer victimization from ages 6 to 13 years and to examine predictive associations of t...

Background: The contribution of mental health to the risk of smoking is increasingly acknowledged but still insufficiently studied during the key period of student life. In particular, the simultaneous action of stress and Attention Deficit Hyperactivity Disorder (ADHD) symptoms on the risk of smoking remains poorly understood. Aims: To assess t...

This chapter describes the state of knowledge on the development of physical aggression from early childhood to adulthood. Using recent longitudinal studies from birth onwards, the authors describe developmental trajectories of physical aggression and indirect aggression, their association during development, and their association with other behavi...

Objective Early temperamental characteristics may influence children’s developmental pathways and predict future psychopathology. However, the environmental context may also shape or interact with infant temperament and indirectly contribute to increased vulnerability to adverse developmental outcomes. The aim of the present study is to explore the...

Temperament at 12 months and children’s behavioral scores at age 5.5 years in the EDEN cohort study- moderation analyses. Adjusted for study center, premature birth, birth weight, birth order, maternal age at birth, maternal history of mental health problems, maternal anxiety in pregnancy, maternal depression in pregnancy, social support, paternal...

Objective: The objective of this study was to examine the independent association between inattention and hyperactivity/impulsivity symptoms and perceived stress among French college students. Method: Participants ( N = 6,951) completed self-report surveys assessing ADHD symptoms, perceived stress, and sociodemographic characteristics. Multinomi...

Few prospective studies spanning early childhood to early adolescence have examined separately the contribution of inattention and hyperactivity to academic achievement. The aim of the present study was to investigate whether the developmental trajectories of inattention and hyperactivity symptoms during early and middle childhood are independently...

Objectif Le tempérament précoce de l’enfant pourrait être associé à des troubles du comportement ou à des difficultés psychologiques ultérieures au cours de l’enfance. Or, des caractéristiques environnementales interagissent également avec le tempérament et accroissent indirectement la vulnérabilité à des difficultés de santé mentale à long terme....

Purpose Poverty has been associated with high levels of behavior problems across childhood, yet patterns of associations over time remain understudied. This study aims: (a) to examine whether poverty predicts changes in behavior problems between 1.5 and 8 years of age; (b) to estimate potential selection bias for the observed associations. Methods...

This study aimed to identify parental stress predictors in ASD by considering individual and environmental factors in an ecological approach. Participants were 115 parents of children with ASD aged from 3 to 10 years. Multiple regression analyses were conducted to determine the best predictors of parental stress among child-related, parent-related...

Background: Emotional lability (EL) is frequent in school-aged children with attention deficit hyperactivity disorder (ADHD) and is associated with more frequent comorbidities and more severe impairment. However, little research has investigated the association between EL, ADHD and comorbid symptoms in preschoolers. This study assessed dimensional...

Contexte L’influence de la comorbidité psychiatrique et de l’environnement social sur la prescription médicamenteuse du trouble déficit de l’attention/hyperactivité (TDA/H) reste mal comprise. Objectif Évaluer l’effet des facteurs comportementaux et sociaux sur la prescription de médicaments ciblant le TDA/H. Méthodes Les données de la cohorte de...

Objectives: Research indicates that suicide rates are high among members of law enforcement. Our objectives were: (1) to determine life events implicated in suicide mortality among French law enforcement; and (2) to describe the different life trajectories of police officers who deceased by suicide. Methods: All suicides of police officers which...

Cet article traite à la fois de l’adaptation de l’inventaire du stress professionnel aux Métiers de l’Urgence et de l’analyse corrélationnelle de l’échelle avec des troubles psychopathologiques tels que l’état de stress post-traumatique et le burnout.

Objectives: Temper tantrums are a main concern in child psychiatry as they frequently lead to consultations or even hospitalization. Children with ADHD often suffer from emotional dysregulation (for review, see Shaw, Stringaris, Nigg & Leibenluft, 2014) but to date little is known about the specificity of temper tantrums in ADHD and their impact on...

Raising a child with an autism spectrum disorder (ASD) implies significant stress levels and changes in family functioning. Most studies deal with parental difficulties, whereas those focusing on parental self-reported support needs related to ASD are fewer, especially in France. Our objective was to explore in a French sample the needs of parents...

Athletes participating in high-risk sports consistently report higher scores on sensation-seeking measures than do low-risk athletes or non-athletic controls. To determine whether genetic variants commonly associated with sensation seeking were over-represented in such athletes, proficient practitioners of high-risk (n = 141) and low-risk sports (n...

Abstract This article summarizes studies on factors associated with doping among children and adolescents. After determining that the prevalence of use of the main products consumed by children and adolescents is at high levels, we used critical analysis to identify psychological factors associated with the use of doping products by children and ad...

Plus de 5 % des enfants souffrent de façon marquée de Trouble Déficit de l’Attention/Hyperactivité. Par la suite, à l’adolescence et à l’âge adulte, ce trouble ne disparaît pas la plupart du temps mais ses manifestations se modifient. La demande de soins pour les jeunes patients a beaucoup augmenté depuis vingt ans, et s’étend désormais aux adultes...

Autism Spectrum Disorders (ASD) are associated with higher levels of anxiety for parents [1]. Provide medical information about autism etiology is the first step to help parents to understand the child disorder and to cope with it. The medical current community accepts that autism is a neurodevelopmental disorder in which genes play a role but that...

Several studies suggest that children with Attention Deficit / Hyperactivity Disorder (ADHD) are impaired in recognizing facial expressions of emotion (for review, see Collin, Bindra, Raju, Gillbarg & Minnis, 2013a). ADHD is a highly comorbid disorder (about 90% according to Ralston, Lorenzo & ADORE, 2004b) but little is known about the influence o...

Background: The impact of longitudinal psychiatric comorbidity, parenting and social characteristics on attention-deficit hyperactivity disorder (ADHD) medication use is still poorly understood. Aims: To assess the baseline and longitudinal influences of behavioural and environmental factors on ADHD medication use. Method: Survival regressions...

Introduction : L’hétérogénéité clinique dans le Trouble Déficit de l’Attention / Hyperactivité (TDA/H) est bien connue des praticiens et des chercheurs. En fonction des sous-types de TDA/H (inattention prédominante, hyperactivité-impulsivité prédominante, mixte) mais également des troubles comorbides présents (Trouble Oppositionnel avec Provocation...

To estimate the incidence of suicide attempts during imprisonment in a French prison and to determine factors associated with them. All male inmates of a prison for prisoners awaiting trial or serving a short sentence (Bordeaux, France) were eligible for this cross-sectional study. They were face-to-face interviewed by an experienced psychologist (...

This article summarizes studies on factors associated with doping among children and adolescents. After determining that the prevalence of use of the main products consumed by children and adolescents is at high levels, we used critical analysis to identify psychological factors associated with the use of doping products by children and adolescents...

Le Trouble Déficit de l’Attention / Hyperactivité (TDA/H) est un trouble neurodéveloppemental qui se caractérise par une triade de symptômes : inattention, hyperactivité et impulsivité. C’est un trouble hautement comorbide : jusqu’à 90% des cas (Ralston, Lorenzo & ADORE, 2004) seraient associés à un trouble oppositionnel, un trouble anxieux … Les e...

L’accompagnement des parents d’enfants avec un trouble du spectre autistique (TSA) présente de multiples enjeux tant d’un point de vue clinique [3] que dans une perspective médico-économique [1]. Le nouveau plan Autisme 2013–2017 ainsi que les recommandations de la Haute Autorité de santé de 2012 insistent sur la nécessité de proposer un accompagne...

Data from large nationally representative samples are needed to provide the empirical foundation to inform health policies for the prevention of suicide risk and risk behaviors in men and women. Data were extracted from the 2010 Health Barometer, a large telephone survey on a representative sample of the general population aged 15-85 years living i...

Twelve percent of seven to 17 year-old children have been involved in a dangerous game [23]. Nowadays, it distinguishes non-oxygenation games, aggression games and challenge games. Often mixed together, they are part of the broad spectrum of risk taking behaviors. The objective of this research is to identify psychological factors associated with e...

De par leurs performances, nous ne pouvons qu’être admiratifs face à de jeunes, voire très jeunes champions. Cependant, au-delà de l’aspect extraordinaire que revêt la réussite précoce d’un enfant, quels sont les coûts subis pour parvenir à de tels succès ? Le jeune athlète qui consacre ainsi la majeure partie de son temps à son entraînement devra...

The link between sexual risk-taking and substance use, on one hand, and the link between sexual risk-taking and life events, on the other hand, is well established in the literature. Novelty seeking has been identified as a risk factor in these relationships. However, a few studies have examined simultaneously the link between sexual-related risk b...

Attention-deficit hyperactivity disorder (ADHD) has been associated with socioeconomic difficulties later in life. Little research in this area has been based on longitudinal and community studies. To examine the relationship between childhood attention problems and socioeconomic status 18 years later. Using a French community sample of 1103 youths...

Attention-deficit/hyperactivity disorder is an etiologically heterogeneous neurodevelopmental condition with long-term negative outcomes. However, the early developmental course of hyperactivity-impulsivity and inattention symptoms and their association with previous environmental risk factors are still poorly understood To describe the development...

Correctional staff has been shown to be at greater risk of suicide. But there is no French study on suicide among this occupational group Even if, if correctional officers are more likely to suffer from burnout because of their difficult working conditions, the reasons for the greater risk of suicide have never been investigated. Our objectives wer...

De nombreuses études ont été menées sur la présence d’un « phénotype large » dans les familles ayant un enfant atteint de troubles autistiques. D’autres recherches mettent également en évidence la prévalence plus fréquente de troubles psychopathologiques chez ces apparentés, comparativement à des familles ayant un enfant avec un autre type de handi...

Autism is a group of neurodevelopmental disorders with heterogeneous phenotypic expression. Twin and family-based studies have demonstrated the importance of genetic factors in the etiology of these disorders. The pioneering work of Folstein and Rutter (1977), showing concordance - 82 % in non affected monozygotic twins and 10 % in non affected diz...

When violence becomes recreation: games of aggression as an example The violence associated with ludic practices is becoming an attractive element through the “dangerous and violent” games that occur at school. This phenomenon which is not isolated takes place in a whole of “aggressive and risky”’s behaviors whose institutional’s answers can’t only...

The present study investigated how European adolescents cope with perceived future-related stress. Altogether 3,154 adolescents (mean age of 15years) from four countries (n=1,071 Italians, n=1,433 Germans, n=308 French, and n=341 British) participated in the study. They completed the Problem Questionnaire, which assesses future-related stress, and...

Les conduites à risques à enjeux physiques (prise de risque routier, sport extrême, conduites de scarification, jeux dangereux/violents) sont devenues un problème majeur de santé publique. Cet article fera le point tant à partir d’une revue de la littérature internationale que d’études personnelles sur les liens entre conduites à risques et dépenda...

To examine the link between symptoms of hyperactivity-inattention and conduct disorder in childhood, and the initiation of tobacco and cannabis use, controlling for other behavioral symptoms, temperament and environmental risk factors. The sample (N=1107 participants, aged 4 to 18 years at baseline) was recruited from the population-based longitudi...

During recent decades, videogame playing has become one of the main leisure activities in children and adolescents. However, studies on video game addiction are still very few. In order to evaluate the difficulties induced by an excessive “consumption” of video games, the team of Dr. Tejeiro developed a self-rating questionnaire: the Problem Videog...

Objectives To describe suicidal behaviours in prisons and to determine factors associated with suicide attempts during imprisonment.Methods All inmates of a prison for prisoners awaiting trial (Bordeaux, France) were eligible for this cross-sectional study. 375 inmates have been face-to-face interviewed by an experienced psychologist. Sociodemograp...

Objectives To describe physical inmate violence in prisons and to determine factors associated with it (being victim and being perpetrator).Methods All Inmates of a prison for prisoners awaiting trial (Bordeaux, France) were eligible for this cross-sectional study. 375 inmates have been face-to-face interviewed by an experienced psychologist. Socio...

In 2007, the French National Cancer Institute initiated a cancer communication campaign entitled “We are two million ordinary heroes”. Aims of this study were to investigate perceptions about this campaign, for 34 women treated for breast cancer. Triangulation of the reports from narratives and assessment of psychological variables ensures better v...

This study explores the environmental, clinical, and personality factors that are associated with increased chronic psychotropic drug consumption in elderly patients. We collected data from 88 elderly individuals living in nursing homes, home-dwellings, and residential homes between December 2003 and June 2004. We assessed each subject's (1) curren...

Background: Although differential patterns of temperament and character have been documented in subjects with attention-deficit/hyperactivity disorder (ADHD), few studies have investigated relations between these dimensions, clinical features of ADHD, and treatment outcome. Methods: Ninety-five boys with ADHD and 87 controls participated in the...

Sexual health-risk behaviors in disruptive children are poorly understood. In a longitudinal population-based sample, event-time analyses showed that subjects with high levels of conduct disorder symptoms, particularly in combination with simultaneously high levels of hyperactivity-inattention symptoms, exhibited the highest risk for earlier sexual...

The Motivational Style Profile for Children (MSP-C) was designed to measure the dominances, orientations and saliences of motivational states in children. The results of reliability testing and factor analysis followed by parallel analysis of the 50-item, 25-paired, and 15-paired versions for cultural samples suggests the MSP-C may be a viable and...

The latest hospital admission device aimed at inmates (the Inter-regional secured hospital unit – UHSI) updates the issues relating to the security aspects of the inmates’ medical care. In order to spot the subjective positioning of a UHSI's inmates, we led interviews, which enabled to achieve a thematic and clinical analysis (location research of...

This study investigated whether first-degree relatives of individuals with autism spectrum disorders (ASD) demonstrate a specific profile of performance on the three cognitive domains studied in the disorders: executive function, central coherence and theory of mind. Parents and siblings of the children with ASD showed poorer performances on all te...