Hi

On Tue, 15 Oct 2002, Beth Benoit wrote:

> TIPSters,
> One of my Intro students asked if a person who is color blind
> has a better perception of movement - particularly peripheral
> movement.  Since the rods take over for missing cones, and a
> person who is color blind has fewer or no cones, could there
> be a difference?

> 
> Here are her words:
> 

> "My husband who is color blind and doesn't really have good
> vision either has excellent perception when it comes to
> seeing animals in the woods. He seems them because of
> movement and it is not center vision when he does see them. I
> often thought it curious that someone with limited accuity
> would have an above average abitilty to pick out animals from
> the background."

It may not have to do with more rods.  Part of animal (and
human) camouflage is color-based.  So someone with deficient
color vision is less deceived.  I believe that colour-blind
people were used as spotters and picture readers during the WWs
for that reason.

Best wishes
Jim

============================================================================
James M. Clark                          (204) 786-9757
Department of Psychology                (204) 774-4134 Fax
University of Winnipeg                  4L05D
Winnipeg, Manitoba  R3B 2E9             [EMAIL PROTECTED]
CANADA                                  http://www.uwinnipeg.ca/~clark
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