This book comes as part of a broader project the editor is developing aiming critically to articulate some theoretical and methodological issues of cultural psychology with the research and practical work of psychologists with Amerindian peoples. As such, the project – of which the present book is part – concerns to a meta-theoretical reflection aiming to bring in new theoretical-methodological and ethical reflections to Cultural Psychology. From this meta-theoretical reflection we have been developing the notion of dialogical multiplication as it implies the diversification (differentiation and dedifferentiation) of semiotic trajectories in interethnic boundaries.