Research on human emotion has produced the emotional circumplex in Figure 3b [BR99]. The axes are the same as those used in Berlyne’s model. Here, however, no dependence is im- plied. The affective model just provides a tool for specifying a wide variety of emotional states. Though the relationship between Berlyne’s model and the emotional circumplex imply that aesthetic judgement is strictly emotionally-based, research by psychologists Baltissen and Os- termann points to the importance of cognitive components as well [BO98]. In their study, 120 subjects were asked to evaluate twenty-four slides of paintings and twenty-three slides of emo- tionally provocative photographs on nine scales: simple-complex, uninteresting-interesting, emotional-unemotional, unpleasant-pleasant,.