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[sahy-kol-uh-jiz-uh m] /saɪˈkɒl əˌdʒɪz əm/
noun, (often used pejoratively)
emphasis upon psychological factors in the development of a theory, as in history or philosophy.
a term or concept of psychology or psychoanalysis, especially when used in ordinary conversation or a nontechnical context.
1855-60; psycholog(y) + -ism Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for psychologism


the belief in the importance and relevance of psychology for other sciences
the belief that psychology is the basis for all other natural and social sciences
Derived Forms
psychologistic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for psychologism

in philosophy, the view that problems of epistemology (i.e., of the validity of human knowledge) can be solved satisfactorily by the psychological study of the development of mental processes. John Locke's Essay Concerning Human Understanding (1690) may be regarded as the classic of psychologism in this sense. A more moderate form of psychologism maintains that psychology should be made the basis of other studies, especially of logic. A classical attack on both forms of psychologism was Edmund Husserl's Logische Untersuchungen (1900-01; "Logical Investigations").

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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