The purpose of using control groups is to
a. address ethical concerns about experiments.
b. determine if there are any interactions among the independent variables.
c. ensure a high level of experimental realism.
d. provide a baseline against which to compare the effects of the independent variables.
d
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A problem with defining abnormal behavior in terms of deviation from statistical norms is that this definition
a. focuses only on very rare conditions. b. focuses only on conditions that are actually relatively common. c. does not specify how unusual the behavior must be to be considered abnormal. d. only considers deviations that are harmful.
Answer the following statements true (T) or false (F)
1. "Pavlov extinguished the conditioned response by repeatedly presenting the bell and not following it with food. " 2. "Once a conditioned response has been extinguished, it will not occur again unless the CS–US pairings are reintroduced. " 3. "Extinction is the equivalent of erasing the effects of learning. " 4. "Pavlov's dogs, which were conditioned to salivate at the sound of a tone, also may salivate at the sound of a doorbell, illustrating the process of generalization. " 5. "Pavlov's dogs, which were conditioned to salivate at the sound of a metronome, also may salivate at the sound of a ticking clock, illustrating spontaneous recovery. "
Between the ages of 2 and 6, a well-nourished child will gain about ______ pounds and grow about ______ inches per year
5; 6 2; 3 41/2; 3 51/2;41/2
The frequency of a sound wave is measured in a unit called ______
a. decibels c. audibles b. timbre d. hertz