Given that field experiments are high in external validity, why is it that social psychologists still rely on laboratory studies?
a. Laboratory studies are more psychologically realistic.
b. Laboratory studies help to control for extraneous variables.
c. Laboratory studies permit random assignment of participants.
d. Laboratory studies are more reliable.
Question 2
According to your text, a perfect study would involve
a. random assignment; random selection; realistic setting; control of all extraneous variables.
b. random assignment or random selection; control over all extraneous variables.
c. high levels of external validity.
d. an experiment, which shows that one variable causes another.
An example of external fertilization.
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