Regarding the theories of color vision, which of the following is TRUE?
a. Trichromatic theory is supported by the behavior of cells lying between the cones and the occipital lobe of the cerebral cortex.
b. Opponent-process theory is supported at the receptor level.
c. Most authorities today suggest that color vision includes elements of both trichromatic and opponent-process theories.
d. Trichromatic theory is based on Hering's work with afterimages.
e. Helmholtz showed that three primary colors of light could be mixed in different ways to create any color.
c
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Asking people who are available to participate in a survey is called:
a. quota sampling. b. cluster sampling. c. systematic sampling. d. convenience sampling.
Geraldine believes that, eventually, high blood pressure may dramatically impair her health. This belief reflects the ______ component of the Health Belief Model
a) susceptibility b) severity c) barriers d) benefits
Why are we currently having an epidemic of treatable diseases in children like mumps and measles, when these diseases are easily preventable?
A. The diseases are mutating faster than we can design cures. B. Drugs that children take to treat ADHD block the effects of some of these treatments. C. Many parents are not vaccinating their children because of the false fear that vaccines cause autism. D. Increases in ease of travel between infectious areas spreads diseases faster than we can cure them.
If a lesbian performs cunnilingus on her long time sexual partner, she is pleasing her partner by use of
A) her penis. B) her mouth. C) her fingers. D) a vibrator.