The embryonic stage is the period from implantation until about the eighth week of development
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TRUE
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Little Albert was conditioned to fear white rats when the appearance of the white rat was always followed by a loud noise. When researchers presented a block of wood, however, Little Albert showed no fear response. Little Albert's lack of response to the block of wood illustrates the classical conditioning process referred to as:
a. stimulus generalization b. aversive conditioning c. conditioned inhibition d. stimulus discrimination
Many involuntary, autonomic system responses ("fight-or-flight" reflexes) are linked with new stimuli and situations by
a. operant extinction. b. classical conditioning. c. operant conditioning. d. instrumental acquisition.
Why is the vagus nerve important to hunger?
A. It sends signals to the brain to monitor protein levels. B. It sends signals to the PVN to monitor fat levels. C. It sends signals about hunger from the medulla to the hypothalamus. D. It sends signals to the medulla to keep track of nutrient levels in the body.
Hierarchically organized concept categories are not representative of natural categories
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