 This multi-dimensional heterogeneity has led some to conclude that folk emotion categories do not designate natural kinds, either with respect to the generic category of emotion (Rorty 1980b, 2003; Griffiths 1997; Russell 2003; Zachar 2006; Kagan 2007, 2010) or with respect to specific emotion categories such as anger, fear, happiness, disgust, and so on (Scarantino 2012; Barrett 2006, 2017). Others have argued that there is, nevertheless, enough homogeneity among instances of folk emotion categories to allow them to qualify as natural kinds (e.g., Charland 2002; Prinz 2004; Zinck &amp; Newen 2008).