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In South-Eastern Morocco, individual membership refers to tribal denominations that testify to the importance of tribes and to the social, political and cultural configurations to which they lead. If otherness supposes a specific terminology to name the other, the processes of self-naming indirectly give us a glimpse of what makes for the shifting identity of groups. The production of new hierarchical categories is significant of the social changes under way and fully illustrates the fact that ‘postulating or declaring an identity reduces it less than remaking or reconstructing it' (Lévi-Strauss, 2000 : 331).