Examlex
Apple is an American company, but its iPhones are assembled in China. The sale of each iPhone then is counted in US GDP as:
Spurious Relationships
A connection between two variables that appears causal but is actually caused by a third variable.
Experimental Situation
The setting experimental subjects are placed in. This setting may be a threat to external validity if it does not reflect external reality.
External Validity
Relates to whether an experiment has in fact captured the external world that the researcher is investigating.
Attrition
The loss of participants during the course of a study, which can impact the study's outcomes and generalizability.
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