The fact that a neuron fires an impulse of the same strength whenever its action potential is triggered is called
a. resting potential. c. the refractory period.
b. polarization. d. the all-or-none principle.
D
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According to the discussion of the representativeness heuristic in Chapter 12, people often commit the small-sample fallacy in social situations. An example of this point is that
a. people may form a stereotype, based on only a few members of a particular ethnic group. b. people frequently try to confirm their current hypothesis. c. people judge others in terms of personal characteristics that are easy to remember. d. people judge the conjunction of two events to be more likely than just one of those events.
Koko the gorilla has a vocabulary of about ____ signs and Washoe the chimpanzee has learned about ____ signs.
A. 200; 20 B. 500; 50 C. 1,000; 250 D. 1,200; 200
Most pregnant women undergo regular medical evaluations of their pregnancies beginning at 8 weeks after fertilization. At this point in development, the fertilized egg is referred to by scientists as a(n) ______.
A. zygote B. embryo C. fetus D. baby
The ________ model represents the contents of memory as connections among a huge number of interacting processing units
a. three-box b. parallel distributed processing c. serial processing d. sequential processing