The threat of "subject characteristics refers to differences among subjects on:
A) a dependent variable
B) an independent variable
C) an extraneous variable
D) a treatment variable
Correct Answer:
Verified
Q2: Students with low, average, and high scores
Q3: Referring to the study in item 2
Q4: Which of the following is a question
Q5: Subjects performing well merely because they are
Q6: Internal validity often receives little attention in
Q8: A threat to internal validity is the
Q9: Loss of subjects is a threat to
Q10: Which of the following is not an
Q11: Instrument decay refers to the possibility that:
A)
Q12: Loss of subjects is a serious threat
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