Instrument decay refers to the possibility that:
A) test content becomes "dated" during the course of a study
B) data collectors are lost during a study
C) records of data are lost during a study
D) the instrument is systematically altered during the course of a study
Correct Answer:
Verified
Q6: Internal validity often receives little attention in
Q7: The threat of "subject characteristics refers to
Q8: A threat to internal validity is the
Q9: Loss of subjects is a threat to
Q10: Which of the following is not an
Q12: Loss of subjects is a serious threat
Q13: Data collector characteristics may be a threat
Q14: Which is the least-effective means of controlling
Q15: Loss of subjects in a study can
Q16: Which of the following might be a
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