This article introduces the views of Yakym Yarema, the Ukrainian representative of the Lviv-Warsaw School, on the problem of unconscious mental processes and proves the direct influence of Kazimierz Twardowski on them and indirect influence of Franz Brentano. The first part of the paper analyses the framework of Yarema's manuscript "The problems of unconscious mental processes" (1926). The second part demonstrates the background of Yarema's views on the problem of unconscious mental processes.

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... he article demonstrates that Yarema's interest in terms of unconscious mental phenomena did not contradict to the tradition of Twardowski's philosophical school, but was determined by the development of psychology as an independent science.