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External Validity
Multiple Choice

1 .       Generalization refers to  



2 .       Which of the following is not listed in the book as a potential threat to external validity?  



3 .       If the results of a laboratory experiment that requires a specific setting can be generalized to other settings, then the experiment possesses ________ validity.  



4 .       Multiple Treatment Interference represents a type of _______ effect.  



5 .       Some research has found this effect not to be robust. Other research, however, has suggested that failure to find this effect was due to differential motivational states between volunteer participants. Which effect is being referred to?  



6 .       A ______ variation represents a variation that occurs within people or organisms.  



7 .       Initially, the primary objective of a study emphasizes ________ validity.  



8 .       An experimenter finds, at the end of the semester, that she is unable to replicate the results she obtained two months earlier. This illustrates a problem with the study’s  



9 .       A(n) __________ interaction is one where the rank order of the treatment effects remains the same across persons, settings, and times.  



10 .       The sample of subjects available to the experimenter is known as the  



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