“…This type of testimony is often called on in France, both in literature (Alphonse Daudet described the reaction of the mother when faced with the conversion of her daughter in The Evangelist ) and in the testimony of several parents of jihadists. Decision-making by participants may therefore be based more on naïve interpretations of “bad influences”, which may be reinforced by representations of the crime published in the media (Voumvakis and Ericson, 1984; Leclerc et al , 2018) but also by the “dissemination of scientific ideas to the general public” (Laurens, 2014). In fact, several studies on manipulation, persuasion, or commitment (Freedman and Frazer, 1966; Kiesler, 1971; Laswell, 1948; Handelman, 2009) have led to the publication of a number of works aimed at a broader public that assert the existence of effective manipulation techniques that one would only need learn and apply to obtain what one wants from others (such as Yes!…”