According to Ekman's research on facial expressions:
a. when people try to hide their feelings with an inauthentic expression, they use different groups of muscles than they do for authentic emotions.
b. authentic smiles last ten seconds or more, whereas false smiles last only about two seconds.
c. when trying to feign sadness, only about 60 percent of people manage to get the eyebrows, eyelids, and forehead wrinkle exactly right.
d. there is little support for Darwin's evolutionary theory that certain human facial expressions are innate.
A
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Bernard is a shy 2-year-old toddler. According to research by Kagan and colleagues on
shyness, Bernard will likely a. outgrow his shyness eventually. b. become less shy depending on his social experiences during adolescence. c. have about a 50 percent chance of remaining shy as an adult. d. develop into a shy child. e. become increasingly shy over the years.
Which of the following statements is NOT true of anti-drug vaccines?
a. They lead to the destruction of drug molecules before they can reach the brain. b. They are not ready for clinical trials in humans. c. They result in fewer side effects than other pharmacological treatments. d. Their effects may be longer lasting than other pharmacological treatments.