Which of the following factors affects the internal validity of experimental…
2025
Which of the following factors affects the internal validity of experimental research?
A. Placebo effect
B. Instrument Decay
C. Contemporary events
D. Hawthorne effect
E. Bias in selecting subjects in the sample
Answer: A. B, C, and E Only
- A.
B, C, and E Only
- B.
B, C, and D Only
- C.
A, C, and D Only
- D.
C, D, and E Only
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Correct answer: A
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