Subjective Evidence Based Ethnography (SEBE) is a method designed to access subjective experience. It uses First Person Perspective (FPP) digital recordings as a basis for analytic Replay Interviews (RIW) with the participants. This triggers their memory and enables a detailed step by step understanding of activity: goals, subgoals, determinants of actions, decision-making processes, etc. This paper describes the technique and two applications. First, the analysis of professional practices for know-how transferring purposes in industry is illustrated with the analysis of nuclear power-plant operators' gestures. This shows how SEBE enables modelling activity, describing good and bad practices, risky situations, and expert tacit knowledge. Second, the analysis of full days lived by Polish mothers taking care of their children is described, with a specific focus on how they manage their eating and drinking. This research has been done on a sub-sample of a large scale intervention designed to increase plain water drinking vs sweet beverages. It illustrates the interest of SEBE as an exploratory technique in complement to other more classic approaches such as questionnaires and behavioural diaries. It provides the detailed "how" of the effects that are measured at aggregate level by other techniques.Acknowledgments: This paper benefited from the smart and constructive comments of three anonymous reviewers. It also benefited from a residency for Lahlou at Paris Institute for Advanced Study (France) as a EURIAS senior fellow, with support of the European Union

Les savoirs experts dans le monde professionnel sont difficiles à capter en raison de leur nature en grande part tacite (difficilement verbalisable). On détaille ici un ensemble de méthodes et techniques (capture numérique du geste en vue subjective et en vue externe; protocole de verbalisation guidé par les buts en situation; entretiens d’auto-confrontation et de reconstruction) qui permettent de récupérer ces savoir-faire en coopération entre l’analyste et l’expert-geste. Le protocole vise: (1) à reconstruire avec l’expert la logique intentionnelle du geste, son modèle mental; et (2) à le montrer au mieux au travers de la vidéo, pour que d’autres puissent le comprendre et l’internaliser à leur tour. Ce protocole de capture aboutit à la réalisation d’un support multimédia pour la représentation et la transmission du savoir-faire métier. L’approche s’inscrit dans une perspective de gestion des connaissances (approche globale, du point de vue de l’organisation, souci pédagogique), adopte une posture proche de celle de l’ergonomie (sympathie pour l’acteur, observation détaillée in situ), et utilise des théories et méthodes issues de la psychologie cognitive et de l’ethnographie numérique. Les principaux cadres théoriques mobilisés sont les théories de l’activité et de la qualité perçue.

This research paper aims to add to current knowledge on reflection, body-worn video and police education. It examines the potential effects of an intervention which employed subcams (a type of body-worn video) and replay interviews of video footage to enhance experiential learning during an operative training course for Norwegian police students in their final year of study. Our investigation examines evaluation surveys for differences between an intervention and comparison group on reflection and experiential learning outcomes. Findings indicate that students in the intervention group self-reported more general learning outcomes from the course concerning decision-making and communication and that they could identify their own mistakes to a greater degree. They also reported more learning outcomes as measured by the number of statements written about what they learned and would change to improve their performance on 3 different simulations. Moreover, the content of these statements reflected the intervention as they involved communication and decisionmaking to a greater degree than students in the comparison group. Implications for the further use of body-worn video to encourage reflection and enhance experiential learning in professional police training and development are discussed.

Every day, people are exposed to images of appetizing foods that can lead to high-calorie intake and contribute to overweight and obesity. Research has documented that manipulating the visual perspective from which eating is viewed helps resist temptation by altering the appraisal of unhealthy foods. However, the neural basis of this effect has not yet been examined using neuroimaging methods. Moreover, it is not known whether the benefits of this strategy can be observed when people, especially overweight, are not explicitly asked to imagine themselves eating. Last, it remains to be investigated if visual perspective could be used to promote healthy foods. The present work manipulated camera angles and tested whether visual perspective modulates activity in brain regions associated with taste and reward processing while participants watch videos featuring a hand grasping (unhealthy or healthy) foods from a plate during functional magnetic resonance imagining (fMRI). The plate was filmed from the perspective of the participant (first-person perspective; 1PP), or from a frontal view as if watching someone else eating (third-person perspective; 3PP). Our findings reveal that merely viewing unhealthy food cues from a 1PP (vs. 3PP) increases activity in brain regions that underlie representations of rewarding (appetitive) experiences (amygdala) and food intake (superior parietal gyrus). Additionally, our results show that ventral striatal activity is positively correlated with body mass index (BMI) during exposure to unhealthy foods from a 1PP (vs. 3PP). These findings suggest that unhealthy foods should be promoted through third-person (video) images to weaken the reward associated with their simulated consumption, especially amongst overweight people. It appears however that, as such, manipulating visual perspective fails to enhance the perception of healthy foods. Their promotion thus requires complementary solutions.

Saadi (2018) Risk assessment for subjective evidence-based ethnography applied in high risk environment: improved protocol. Advances in Research, 16 (3). pp. 1-15.