This is the first comprehensive theoretical article on aesthetic emotions. Following Kant's definition, we propose that it is the first and foremost characteristic of aesthetic emotions to make a direct contribution to aesthetic evaluation/appreciation. Each aesthetic emotion is tuned to a special type of perceived aesthetic appeal and is predictive of the subjectively felt pleasure or displeasure and the liking or disliking associated with this type of appeal. Contrary to the negativity bias of classical emotion catalogues, emotion terms used for aesthetic evaluation purposes include far more positive than negative emotions. At the same time, many overall positive aesthetic emotions encompass negative or mixed emotional ingredients. Apprai...