Yes, it's me again. I think I've sorted the terminology out and sorry for making my education so public.
Trichromats have three kinds of cones (common as dirt) Dichromats have two kinds of cones (in the minority) Cone monochromats have one kind of cone (rare) Rod monochromats have zero kinds of cone (they should really be called nonechromats) (rare) Everybody has rods. This classification is based on changes in the kind of cones. I'd guess that no one knows if there are any changes in the overall number of cones and rods in these disorders. But I'll be happy to be corrected. Now, which one does Beth's student have? -Stephen ______________________________________________________________ Stephen L. Black, Ph.D. tel: (819) 822-9600 ext 2470 Department of Psychology fax: (819) 822-9661 Bishop's University e-mail: [EMAIL PROTECTED] Lennoxville, QC J1M 1Z7 Canada Dept web page at http://www.ubishops.ca/ccc/div/soc/psy TIPS discussion list for psychology teachers at http://www.frostburg.edu/dept/psyc/southerly/tips _________________________________________________________ --- You are currently subscribed to tips as: [EMAIL PROTECTED] To unsubscribe send a blank email to [EMAIL PROTECTED]
