 While this extensive interdisciplinarity is a fairly recent development (with few exceptions, most of the relevant work dates from the past quarter century), it should not be a surprising development. From antiquity to the present, philosophers have not been bashful about making empirical claims, and many of these empirical claims have been claims about human psychology (Doris &amp; Stich 2005). It is therefore unremarkable that, with the emergence of scientific psychology over the past century and a half, some of these philosophers would think to check their work against the systematic findings of psychologists (hopefully, while taking special care to avoid being misled by scientific controversy; see Doris 2015, Chapter 3; Machery &amp; Doris forthcoming). 