Abstract. Main aspects of evolutionary psychiatry are introduced – the evolutionary paradigm as applied to the field of psychiatry, including evolutionary explanatory framework for the origins of psychiatric conditions and disorders. We start with a short introduction of the main deficiencies of the classical biomedical model in relation to psychiatry. Then we present some major evolutionary aspects of human nature and its development – phylogenesis, the hierarchical structure of the human brain and ontogenesis. We conclude with some of the most significant evolutionary explanations on the origins of psychiatric disorders.

Key words: evolutionary psychiatry, human nature, phylogenesis, evolved psychological mechanisms, archetypal predisposition, ontogenesis, the triune brain

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