What is the difference between internal validity and external validity?
A. Internal validity deals with the accuracy of conclusions drawn about cause and effect, whereas external validity deals with the generalization of findings of a study to other settings.
B. Internal validity deals with establishing positive linear relationships between variables, whereas external validity deals with establishing negative linear relationships between variables.
C. Internal validity deals with the creation of operational definitions for procedure, whereas external validity deals with establishing curvilinear relationships between variables.
D. Internal validity deals with the accuracy of methods for studying variables, whereas external validity deals with the randomization of variables present in a study.
Answer: A
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