The birth of modern psychotherapies-along with the birth of psychology as a science on one side and with psychoanalysis, other depth-psychological treatments and behavioral therapies in addition to medical treatments of psychological disorders on the other side-in the 19th and 20th centuries was accompanied by positivistic and mechanistic paradigms underlying empirical research and claims of scientific dignity [1]. Affirmations which could not be tested or observed empirically had to be excluded from science-including any kind of metaphysics and religious belief, notwithstanding pioneering studies by William James [2], Granville Stanley Hall, James Henry Leuba and Edwin Diller Starbuck [3] for psychology in general and for psychology of religion(s) in particular. In particular, the critique of religions by Sigmund Freud has continuously exerted a strong impact in the fields of psychiatry and psychotherapies
in addition, regarding psychodynamics and symptoms of psychic disorders, religious phenomena in the lives of patients may be just as affected as other cognitive and emotional aspects and behaviors [4]. Consequently, religious experience and religious behavior of patients in psychiatry and psychotherapies have rarely been object of research and teaching apart from predominantly symptomatic and pathogenic perspectives. [...]