Abstract
Disgust for a cluster of objects is referred to as trypophobia. Although physical factors of trypophobic visual stimuli such as density and spatial frequencies has been studied by a previous study (Le et al., 2015), no studies has been done on cognitive factors of trypophobia. In the present study, the participants were asked to rate unpleasantness evoked by Trypophobic Visual Stimuli (Le et al., 2015) and by a new set of images of clusters consisting of natural and artificial objects. The results suggested that clusters of natural objects elicited significantly more unpleasantness than those of artificial images. We speculated that natural images caused more unpleasantness because trypophobia is associated with disgust for scars, sores, and dangerous animals we see in nature (Cole & Wilkins, 2013).
