“…One can also find olfactory experiences that are associated with apparently more arbitrary features, such as the visual or amodal dimension of "brightness" (N. E. Cohen, 1934;von Hornbostel, 1931;Kemp & Gilbert, 1994, 1997Schiller, 1935), 1 the colors or shapes of three-dimensional objects (Smets & Overbeeke, 1989), and the notion of "thickness," "heaviness," or "density," borrowed from the tactile domain and typical of solid objects (Stevenson & Mahmut, 2011). Finally, when prompted, or when performing some sort of forced choice task, people not only associate odors with certain auditory features, such as auditory pitch (Belkin et al, 1997;Crisinel & Spence, 2012b), but also with certain visual features, such as angularity and roundness (HansonVaux, Crisinel, & Spence, 2013;Seo, Arshamian, et al, 2010).…”