ABSTRACT
Darwin's interesting presentation was obviously stimulated by the recent writings of Mattingly and Liberman, particularly their latest paper entitled "Speech and other auditory modules" (Mattingly & Liberman, in press). My comments fall into three groups. The first few remarks concern differences in the experimental paradigms relied on by Darwin and by the Haskins researchers. Then I have a few comments on the duplex perception situation as interpreted by Mattingly and Liberman. Finally, I would like to speculate on the possible mechanism of dichotic integration in the duplex perception task. (For a description of that task in this volume, see Fowler & Rosenblum, chap. 3).
