Research Methodology · Research Aptitude
In a 'two groups, randomized subjects post-test only' research design, which of the following may be a source that jeopardizes validity? (A) Pretesting procedures (B) Measuring instruments (C) Interaction of selection and the independent variable (D) Reactive experimental procedures (E) Statistical regression Choose the correct answer from the options given below:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(A) and (B) only
- 2(B) and (C) only
- 3(C) and (D) only✓
- 4(D) and (E) only
Correct answer
(C) and (D) only
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