6 Suppose you believe that audiences are more likely to be influenced by an attractive than by an unattractive person. So you have someone give a speech in favor of welfare reform to two randomly assigned groups of subjects. For one group, the speaker is made to look very clean-cut and attractive. For the other group, the same speaker is made to look shabby and unattractive. Afterwards, participants report their views on welfare reform. This study is an example of
a. an observational study
b. a case study
c. a correlational study
d. an experiment
Coral reefs are influenced by sea surface temperatures.
Darwin was deeply influenced by his stop in the Galapagos Islands.
Some scientists believed that langur infanticide was influenced by human disturbance.
James Madison was a key figure at the Constitutional Convention of 1787 in Philadelphia. He not only
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Pattern baldness, a sex-influenced autosomal trait in humans