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The potential of intensive analysis is increased when quantitative and qualitative aspects are combined rather than used separately. Its practice should enhance study of the psychotherapy process. The authors propose a pluralistic and cyclic model combining quantitative intensive analysis and qualitative research around four principles: 1. empiricism; 2. context; 3. dialectics between quality and quantity; 4. interplay between form and substance. This model combines two epistemologies: empiricism and constructivism hermeneutics.