Abstract
This article examines how aesthetics became a branch of psychology during the early modern period in which new references to taste, perfection, and harmony reinforced the emphasis on personal experience and judgement that was common to the natural and the human sciences of the period. During this period the debates in art theory centred on questions of the legitimacy of artistic innovations in style and genre, and were based on interpretations of the ancient texts of rhetoric and poetics. It discusses the factors that contributed to the development of aesthetics, the question of aesthetics prior to the eighteenth century, and the post-Kantian distinction between the tasks of rhetoric and those of aesthetics.