Which theory of color vision holds that there are three types of cones that respond to red, green, and blue with other colors resulting from combinations of these three?
a. opponent-process theory
b. trichromatic theory
c. three-opponent theory
d. primary stage theory
B
Psychology
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Six of every seven pounds of tobacco grown in the U.S. are used for cigarettes
a. True b. False Indicate whether the statement is true or false
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By convention, the mean of the sampling distribution equals
a. 0. b. the mean of the sample. c. 1 d. -1.
Psychology
In Piaget's _______________ stage, children believe that rules are made by authorities and can
not be changed. a. moral realism b. moral relativism c. conventional morality d. moral flexibility
Psychology
The process in organ formation where each major organ and system becomes represented by its own unique cellular tissue is called
A) organogenesis. B) teratogens. C) critical periods. D) differentiation.
Psychology