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The textual or iconographic portrait is used in many disciplines to highlight the roles held by individuals or groups. However, it remains little used as a method of investigation in information and communication sciences. Based on observations made with secondary school pupils who have been asked to draw up, it is possible to consider that the self-portrait, drawings by the observer and by peers can help to reveal practices. An interpretative grid based on the vocabulary of documentary languages facilitates interpretation. Thus from the portrait to the scene the drawings complete other methods of investigation.