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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Galen added to Hippocrates' four personality types the idea that
a. there were two additional types. b. the personality types could be combined. c. the personality types could not be combined. d. each type reflects an excess of some bodily fluid.
Researchers have studied a group of nurses over several decades, collecting data on a variety of health and lifestyle issues. This type of research is called
a. longitudinal research. b. cross-sectional research. c. trend research. d. multiple baseline research.