Subject: Re: AUDITORY Digest - 11 Apr 2004 to 13 Apr 2004 (#2004-78) From: Pierre Divenyi <pdivenyi(at)EBIRE.ORG> Date: Wed, 14 Apr 2004 10:52:30 -0700Chuck Watson's note came into this discussion like a whiff of fresh breeze. To me, the distinction between perception and cognition is quantitative rather than dichotomous. Can we set a criterion, something like "if it takes longer than five seconds to make a response, then the task is cognitive?" Otherwise we will be forced to continue to characterize both concepts with lists of what they are not, not what they are or might be. I remember way-back in the early 70's when suddenly psychology departments decided to focus on cognition and perception teachers had to re-tool to teach cognitive psych 101. At a meeting in 72 or 73, our colleague Barry Leshowitz announced to us, with some hilarity, that he devoted an entire lecture to 2AFC because that task was cognitive. It sure beat courses such as animal cognition, etc... Pierre Divenyi