Examlex
Historians of the witchcraft age concluded that ____.
Differential Regression
A statistical phenomenon where groups with extreme scores on a pretest will likely have less extreme scores on a posttest, not due to the intervention but to statistical artifacts.
Internal Validity
refers to the degree to which a study accurately establishes cause-and-effect relationships free from confounding variables.
Attrition
Attrition refers to the reduction in the number of participants or subjects over the course of a study, which can affect the study's outcomes and generalizability.
Instrumentation
pertains to the process and tools used for measurement and data collection in research studies.
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