In order to test the validity of a theory, developmental researchers must
a. test it scientifically. c. make conclusions.
b. test it only once. d. never test it again.
a
Psychology
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Heroin became the drug of choice for many opioid users
A. around 1900, because it could be injected. B. during the 1920s, because it was easier to smuggle the small amounts needed for an effective dose. C. during World War II, when supplies of raw opium were cut off. D. in the 1960s, because users believed that it was more pure than other opioids.
Psychology
Describe why the assignment of subjects to the conditions of an experiment in a between-subjects design is such a critical issue
What will be an ideal response?
Psychology