Early mother-infant interactions are influenced by the eco-cultural context within which they take place and impact the infant´s development of socio-emotional competences. The genetically open programs of the attachment system enable a child within the limits of the system to adapt to varying eco-cultural contexts. This study focuses on the cultural aspects of attachment among the Cameroonian Nso, a prototypical interdependent cultural group very distinct from Western cultures. 32 Nso families with one-year old infants were visited twice by a German / Cameroonian female stranger respectively, who greeted family, mother and child and interacted with the child for five minutes. The visiting scenes were videotaped and the child s reactions were coded with respect to emotional reaction, closeness with mother, signs of avoidance or approach towards the stranger. Additionally, the mothers were interviewed on attachment topics. Results for the greeting scenes show three distinct reaction patterns, independent of whether the stranger was a German or Cameroonian woman. Children reacted predominantly fearful, curious or unemotional. Results are discussed by drawing on information gathered through the interviews which suggest that calm, non-distressed children are highly valued in the Nso ethnicity and that mothers deliberately use frightening behavior as a means of education. From a western point of view, maternal frightening behavior is considered to be responsible for the development of disorganization; The results suggest that within the cultural context of the Nso, however, typical reactions traditionally associated with disorganization like freezing and impassiveness need to be (re-)interpreted according to the eco-cultural context.

No description available.

Plus de 150 millions de personnes souffrent de troubles dépressifs à travers le monde. Malgré le nombre croissant d’études s’intéressant à la physiopathologie de ce trouble, aucune amélioration majeure concernant ses traitements ou la compréhension des mécanismes biologiques sous-jacents n’a été faite. Bien qu’une prédisposition génétique et des évènements stressants aient été proposés comme facteurs de risque, ni les gènes impliqués ni le fonctionnement des interactions gène x environnement ne sont encore connus. Cela peut s’expliquer par le manque de modèles animaux satisfaisants et par le fossé existant entre les connaissances / méthodes de diagnostic appliquées en recherche clinique et celles disponibles en recherche fondamentale. Des manipulations pharmacologiques, lésionnelles, génétiques ou de l’environnement sont quasi exclusivement utilisées chez le rongeur. Certains primates non-humains (PNH), plus proches de nous sur les plans comportementaux et phylogénétiques, montrent pourtant, comme l’Homme, des modifications comportementales et physiologiques atypiques et spontanées en réponse à des conditions de vie stressantes. Malgré les travaux pionniers et prometteurs d’Harlow et de ses collaborateurs dans les années 60, rares sont les équipes qui étudient la dépression chez le macaque aujourd’hui. Nous avons émis l’hypothèse que parmi des grandes populations de PNH captifs, une petite proportion d’individus exprime des comportements atypiques pouvant s’apparenter à des symptômes dépressifs. Mon projet de thèse a eu pour but de proposer une approche novatrice et non invasive d’identification de ces profils « depressive-like » chez le macaque, en combinant les compétences et connaissances de l’éthologie, de la psychiatrie et des neurosciences. L’impact des expériences de vie précoces et de l’espèce a également été abordé. Les comportements, les postures et orientations du corps, les localisations spatiales, les regards et/ou les distances inter-individuelles ont été relevés chez plus de 200 macaques rhésus et cynomolgus d’élevage, nés en captivité ou dans la nature. Des sous-groupes d’individus ont été identifiés à l’aide d’analyses multifactorielles. Dans chaque population observée, un profil « depressive-like » a été mis en évidence par comparaison avec les symptômes décrits dans le Manuel Diagnostique et Statistiques des Troubles Mentaux et avec les modèles animaux existants dans la littérature. La prévalence de ces profils étant supérieure chez les macaques rhésus et chez les animaux nés en captivité, nos résultats concordent avec le rôle suggéré du stress dans l’expression des troubles dépressifs. En plus d’exprimer ce profil comportemental atypique dans leur environnement habituel, les singes « depressive-like » présentaient une réactivité émotionnelle altérée au cours 2 tests comportementaux, associée à des taux élevés de cortisol plasmatique et noradrénaline cérébro-spinale. Pris dans leur ensemble, ces résultats prometteurs confèrent une bonne validité de représentation à notre modèle macaque de symptômes dépressifs. Une caractérisation plus complète de ce modèle est bien sûr nécessaire et pourrait ouvrir de nouvelles perspectives quant à la compréhension de l’étiologie et de la physiopathologie des troubles dépressifs. / More than 150 million people worldwide suffer from major depressive disorder (MDD). Although investigations of its pathophysiology have dramatically increased in the last decade, no substantial improvement has been made concerning the treatments and the understanding of its underlying mechanisms. A genetic predisposition and stressful experiences have been acknowledged as risk factors involved in MDD. However, no specific genes have been identified so far and little is known about the gene x environment interactions. This is likely due to the lack of bona fide animal models of depressive-like symptoms. Indeed, there is a huge gap between the knowledge / diagnostic methodology of clinical research and the animal models used in fundamental research, mainly focusing on environmental, pharmacological, lesional or genetic manipulations. Phylogenetically and behaviourally closer to Humans compared to rodents, non-human primates (NHPs) can show spontaneous behavioural and physiological modifications in response to stressful life events. Although promising results had been reported in the 1960’s by the pioneering studies of Harlow and colleagues, the investigation of depressive-like symptoms in macaques are scarce in the current literature. We hypothesize that, among large captive NHP populations, a few individuals will display atypical behaviours that could mimic depressive symptoms. Combining the skills and knowledge of ethology, psychiatry and neurosciences, my PhD project aimed at proposing an innovative non-invasive detection method of such depressive-like profiles. The impact of birth origin and species was questioned as well. Behaviours, body postures, body orientations, spatial location, gaze direction and/or inter-peer distances were collected among more than 200 rhesus and cynomolgus captive- or wild-born farm-bred macaques. Using multifactorial analyses, clusters of individuals displaying distinct behavioural profiles were identified. In each population, a common depressive-like profile was characterised by its similarities with symptoms described in the Diagnostic and Statistical Manual of Mental Disorder and with other animal models of depression. The prevalence of such profiles was increased in the rhesus populations and by captive early life experience, corroborating the role of stress in the development of MDD. In addition to expressing depressive-like features in their home cage, these animals displayed higher levels of plasmatic cortisol and cerebrospinal noradrenaline which correlated with a passive emotional reactivity in 2 behavioural paradigms. Altogether these promising results conferred good face validity to our NHP model of depressive-like symptoms. Further characterization of this model is required and might bring new insights to the understanding of MDD pathophysiology and etiology.

The diploma thesis is divided into three parts: cattle herd management, ethology and economic evaluation. The observation was carried out on the farm which is situated in the mountain region of Šumava mountain with decreasing agricultural production. The main production is cattle breeding without market milk production. These meat breeds (Hereford, Aberdeen angus, Charolais) are bred there.

This project describes the role of ritual in the basic entrainment processes of Canadian soldiers. Building on the ecological systems theories of Urie Bronfenbrenner and Roy Rappaport, this project construes human adaptation to occur within multiple interdependent planes of ordered biological, sociostructural, psychosocial and symbolic (even transcendent) meanings and interactions within integrated social ecologies or “living systems.” Rappaport’s theory supports the argument that invariant, embodied actions and impulses not encoded by ritual performers establish social order, values, motivations, competencies, dispositions and representational or symbolic meanings—understood within this project as worldview—circulating within and regulating integrated human ecologies. Ordered sequences of invariant actions and impulses have also come to be conveyed within human phylogenic and ontogenetic developmental processes. This project specifically explores the hypothesis that embodied ritual dynamics pervade the basic entrainment rite of Canadian soldiers. The analysis draws on the ritual theory of Rappaport and the psychosocial developmental theory of Erik Erikson to describe the manner in which innate social regulating impulses and liturgically ordered ritual processes are exploited, in conjunction with predictable human psychosocial developmental imperatives, to build foundational martial dispositions, a spontaneous impulse to radical solidarity and a robust, homogeneous and multivocalic worldview in Canadian soldiers. Such a worldview is adaptive to all aspects of service within the Canadian Armed Forces. The rudimentary martial worldview inscribed upon recruit soldiers and officer candidates forms the foundational background to all subsequent martial meaning and adaptation in so far as it is collectively maintained throughout the military career. This argument maintains that a ritual analysis of adaptive meaning and solidarity among soldiers has profound implications for the structure and direction of future research investigating the persistent and well documented rates of distress, maladaptation and health pathology among serving members of the Canadian Armed Forces.

No description available.