achievement an interdisciplinary study needs congruence between disciplines involved in ‎research. such studies are necessary to establish three species congruence.methodological, ‎linguistically and epistemological congruencies are three necessities that create integration in ‎interdisciplinary study. sample-based survey of part of interdisciplinary research in the field of ‎qur'anic stud...

historical development of variety of methods in educational inquiry shows that with regard to complexity of educational issues that derived itself from human being complexity, we can't answer different questions of scholars by just one unit method. phenomenology as philosophical movement by introducing of subjects such as conciseness, intentionality, reduction, constitution, intersubjectivity, ...