In his work on facial expressions, Paul Ekman has found that
a. Darwin's view of emotion was substantially incorrect.
b. all facial expressions are universal.
c. cultures express all emotions in the same way.
d. a set of emotional expressions is universal to the human species.
Answer: d. a set of emotional expressions is universal to the human species.
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Which of these biological factors has been shown to influence a child's preferences among toys?
a. Size of the corpus callosum in proportion to the size of the cerebral cortex b. Amount of testosterone exposure before birth c. Ratio between the transmitters serotonin and norepinephrine in the brain d. Mean velocity of action potentials of spinal nerves
Which of the following drugs has no set range of elimination because its metabolites are used too efficiently in the body to be measured reliably?
a. marijuana b. LSD c. cocaine d. alcohol
It is has been estimated that there are ________ varieties of psychopathology
a. at least 150 b. more than 300 c. thirty main d. approximately 1000 e. about 750
Which of the following is true about action potentials?
A. They produce a large charge B. They are generally fairly weak C. They vary in strength D. They occur in an all-or-none fashion