Manipulating the environmental variable that you think has an influence on some
behavior and then measuring that behavior is called the ____ method.
(a) survey (b) experimental (c) control group
(d) correlational (e) none of the above
B
Psychology
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The hygiene hypothesis states that modern children are overprotected from viruses and bacteria, which does not allow their immune systems to strengthen.
a. true b. false
Psychology
The scientist who proposed the mechanism of natural selection to explain the process of evolution was ______
a. Freud c. Darwin b. Pasteur d. Watson
Psychology