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All psychologic phenomena occur in consciousness. However, "consciousness" has two meanings: the faculty and the content of awareness. Traditional psychologies have largely concerned themselves with the content, neglecting the problem of the faculty, thus, limiting our understanding of human psyche. Study of meditation is a viable approach to the exploration of both meanings of consciousness. Meditation aims at a "cleansing" of the mind to reach, thereby, a content-free and conflict-free state--pure consciousness.
Suk Choo Chang (1978) studied this question.