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In this article, we put into action a new conceptualization of self-talk using the methods of analysis developed in a previous article. To this end, we analyze the cue word "En Avant" (forward) that William, an Olympic mogul-skiing champion, says to himself when he does a double twisting backflip on the first jump of a mogul run. The description of the different properties of the cue word "Forward" led us to propose three effects: 1) the cue word brings out a language function within a motor activity, 2) the cue word supports the deployment of the different possible actions and carry out the choice of the right action, 3) the cue word allows live feedback on the action. The discussion in this article shows how the effects of the cue word do not exist per se, they exist through the dialectical relationship between the athlete and the word, and are the product of a development. [ABSTRACT FROM AUTHOR]

In this article, based on Vygotsky's writings, we propose an epistemological shift in the study of self-talk in sport. To do this, we identify the characterizing elements of self-talk, i.e. the situation, the subject and the words, and formalize their properties and relationships using the theories of Vygotsky and contemporary authors (Rabardel, Pastré, Clot, Vergnaud and Friedrich). This work of conceptualization leads us to define self-talk as an instrumental act that is part of a mediating activity, in other words a situated, embodied and dynamic phenomenon. [ABSTRACT FROM AUTHOR]

The article presents a hypothesis on suicides in a professional environment. The e-mail message left by a clerk from the post office in Le Fère, France, in November 2012 before he hanged himself is used as an example. The author discusses the sociology of suicides, collective and professional consciousness, the debates in occupational psychopathology, and the activity theory according to Russian psychologist Lev Vygotski.