The paper considers chronological and theoretical development of psychotherapy with the aim of formulating psychotherapeutic paradigm as an expression of scientific improvement in this field, as well as methodological and empirical assumption of integrative models in the psychotherapy. Special attention is paid to the phenomena that have characterised the field of psychotherapy in recent time, such as, on one hand, the emphasis on the increased need for the empirical evaluation of practice and accompanied trend regarding specialisation, and, on the other hand, the strengthening of the trend towards defining and researching general change mechanisms from wider, more integrative and transtheoretical perspective.