Which theory of color vision appears to explain instances of color blindness best?
a. ?frequency theory
b. ?volley theory
c. ?trichromatic theory
d. ?opponent-process theory
ANSWER:
c
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A pediatrician is interested in phobias that typically begin in childhood. One phobia that he might study is ____
a. agoraphobia c. social phobia b. animal phobia d. claustrophobia
To teach his child the prototype for cat, Dad points to many examples in books, at home, on TV and in the neighborhood, while saying the word "cat.". These are __________ of the cat concept
a. positive instances c. positive overextensions b. negative instances d. prototypes
The most commonly used contraceptive methods in the United States are ____
a. male and female condoms c. male and female sterilization b. birth control pills d. diaphragm and spermicide
The cells that produce myelin in the central nervous system are called:
A) Ranvier cells B) Astrocytes C) Oligodendrocytes D) Schwann cells