Abstract

Reply by the current authors to the comments made by Jaak Panksepps , James.A. Russell and Louise Sundararajan on the original article by Peter Zachar . I consider the utility of the concept of natural kind, and explore difficulties in applying it reliably. I examine categorical and dimensional approaches to affect with respect to both scientific realism and nominalist approaches to classification. I agree that eliminativist analogies are beneficial but argue that they cannot fully account for the relationship between folk and scientific psychology. I also claim that neither Panksepp's nor Russell's models are incommensurable with Sundararajn's deeper approach to affective science. I suggest that Panksepp's conclusions about the structure of primary affect may be incompatible with the dimensional model, which illustrates the limits of translational work. 2012 APA, all rights reserved)