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[How do young users of psychotropic substances view themselves and their environment? Typologic analysis].

An epidemiological survey was carried out among high school students of 3 French regions. Their use of drugs (alcohol, tobacco, psychotropic drugs, illicit drugs) was studied and four different subgroups of users were identified by classification. Moreover, cluster analysis applied to adolescent personality self-perception revealed 10 different personality types (5 for the boys; 5 for the girls). The correlations between personality self-perception and drug use allows to define groups at risk by the intersection of partitions.