[The work of collecting materials of artistic expression from various media].

Work of collection of productions made in workshops of expression constitute a specific need for evaluation in art-therapy. The Mediatised Observation is completed by special validated (K-test) and built instruments of description for productions from each mediation (paintings, writings, music...) and for observed behaviours in situ during therapeutic work of creation. The two benefits are for nurses education, and for elaboration of a clinic of aesthetic.