Subject: Re: Implicit human echolocation From: Thomas G Brennan <g_brennantg@xxxxxxxx> Date: Thu, 31 May 2007 23:32:27 -0500 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>Barry, I do actually largely agree with you. What I've always seen as intellectually dishonest is the use of sighted subjects to study this. Sighted people need not develop echo skills and to judge echo location by an untrained sighted person is a bit like judging a bicycle rider in a circus for ability by testing people who have never riden a bicycle. Tom Tom Brennan KD5VIJ, CCC-A/SLP web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html