A scientist finds that two sounds, one presented at 20 decibels of loudness and one presented at 22 decibels of loudness, can be identified as different 50% of the time. He has identified a(n)
A. absolute threshold.
B. difference threshold.
C. sensory threshold.
D. psychophysical limit.
Answer: B
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In the visual system, the ____ and ____ constantly feed information back and forth
a. thalamus; cortex b. thalamus; inferior geniculate c. inferior colliculus; thalamus d. thalamus; lateral colliculus
Freud identified each of the stages of development according to
A. the primary erogenous zone during that stage. B. how much energy is fixated at the stage. C. the extent to which the ego and superego are able to influence the child's behavior. D. the extent to which id impulses are repressed by the ego.
Psychophysical methods would NOT be used to measure judgments about
a. loudness. b. brightness. c. heaviness. d. Happiness
The _______________ is sometimes called "the emotional brain," although researchers have discovered it has functions unrelated to emotions and the term is falling out of favor
a. thalamus b. medulla c. reticular activating system d. limbic system