 While all Russellian monists maintain that quiddities are relevant to consciousness  (section 1.1),  some construe quiddities themselves as phenomenal properties (Maxwell 1978; Lockwood 1989, 1992; Rosenberg 2004; Strawson 2003, 2006a,b; Mørch 2014; Goff 2015, 2017; cf. Unger 2005). The result is a variety of Russellian monism known as Russellian panpsychism (Chalmers 2013 [2015: 246–247]). Russellian panpsychism is so called due to the assumption that phenomenality is ubiquitous: it occurs everywhere the most basic physical dispositions do. But as a terminological matter, one might allow that a Russellian monist theory counts as Russellian panpsychism if it specifies either that at least some of the most basic physical dispositions are underlain by phenomenal quiddities (Chalmers 2013 [2015: 246]) or that all such dispositions are so underlain (Strawson 2006a,b).)