Abstract
Zagaria et al. identified fundamental issues and inconsistencies in the understanding of the fundamentals of psychological science. This paper attempts to trace the roots of the inconsistency and incompleteness of definitions of basic psychological concepts in the historical development of psychological science that led to the fragmentation of psychology into the various reductionistic and monological “schools of thoughts”. A systematic approach is proposed as a way for a reconsideration of the understanding of mental processes in a holistic way that could serve as the starting point for the proper theoretical reflection of the catalytic interplay between subjective (intentionality), situational and cultural factors. It is argued that the anthropologisation of psychology and bringing back the focus on phenomenological aspects of experiencing which are characterised by intra-individual, cross-situational and inter-cultural variety is especially significant for the rebuilding of the integrity of psychology. The principle of “organic selection” is proposed as the basis for individual subjectivity and innovations throughout the irreversible ontogenetic developmental dynamics that allows individuals to jump beyond the phylogenetically prescribed schemata.