Husserl’s (2023) “Paradox of the Psychological Reduction,” with support and elucidation from Husserl’s published writings, shows the necessity of employing the phenomenological epoché and reduction in order to perform valid psychological research. The relationship between the transcendental and psychological reductions, including their closeness, differences, and peculiar identity are explored. Although necessary, the phenomenological method does not guarantee true psychological knowledge but rather requires a reflexive, self-critical, self-corrective historical process that confronts and overcomes naturalistic prejudice and other misguiding assumptions and dogma (...) as well as superficial and flawed research performances. Phenomenological psychology and philosophy are inseparable, in a bidirectional relationship that informs the socio-cultural sciences including empirical psychology and all disciplines that study persons, communities, human artifacts, and humanity. The implications and relevance of phenomenological method are spelled out in light of the history and contemporary challenges of psychology. (shrink)