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Home Q & A Board Science-Related Homework Help Psychology
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Shinobi Shinobi
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6 years ago
While the trichromatic theory of colour perception was first formulated in the 1800s, research in the 1960s suggested that there were ________ kinds of cones and that each was sensitive to either ________.
a. two; red or blue
b. three; red, green, or white
c. two; red or green
d. three; red, green, or blue
Textbook 
The World of Psychology, Canadian Edition

The World of Psychology, Canadian Edition


Edition: 8th
Authors:
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radmehrradmehr
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6 years ago
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Shinobi Author
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6 years ago
Thanks
taydav
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Yesterday
Good timing, thanks!
Starfiew
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2 hours ago
Correct Slight Smile TY
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