Different psychotherapeutic techniques bring some results under any circumstance due either to their common or aspecific factors. The research on the outcome and the process and the Empirically Supported Treatments have failed to outline these factors, since the artefacts introduced, in order to satisfy the research criteria, yield results unsuitable for clinical practises. The relationship has been reassessed, to which also techniques have to subserve, so that the therapy can be tailored on the patient. Its objectification and quantification seem to fade away every time, suggesting that the scientific method is not applicable to the analytical dialogue, as much as art, since the stream of consciousness is inexhaustible and continuous.
Keywords: Aspecific or Common Factors; Meta-Analysis; Transfert Operationalization; Empirically Supported Treatments; Therapeutic or Working Alliance; Tailoring.