From kenh@microsoft.com Fri Oct  9 16:55:23 1998
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From: Ken Hinckley <kenh@microsoft.com>
To: "'Ivan Poupyrev'" <poup@mic.atr.co.jp>,
        Doug Bowman
	 <bowman@cc.gatech.edu>
Cc: 3D UI List <3d-ui@hitl.washington.edu>
Subject: RE: Multidimentional feedback (was: Chat notes)
Date: Fri, 9 Oct 1998 13:57:05 -0700 
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Status: RO


Ivan wrote:
	For 3D user interfaces I would also add:

	* principle of consistency between feedbacks (make sure that when
	user feels that real hand moves forward (reactive feedback), he/she
	does not see virtual hand moving backward (instrumental feedback));


This basic idea has been around for a long time, sometimes known as the
"kinesthetic correspondence principle." As far as I can tell, the original
reference for this is:

1.	Britton, E., Lipscomb, J., Pique, M., "Making Nested Rotations
Convenient for the User," Computer Graphics,  12 (3): p. 222-227, 1978.


Ken Hinckley
Microsoft Research
One Microsoft Way
Redmond, WA 98052
(425) 703-9065
kenh@microsoft.com