Research Methodology · Research Aptitude
A researcher conducts a quasi-experimental study to evaluate the impact of a new teaching method. The experimental group is selected from one school and the control group from another. After the study, significant improvement is observed in the experimental group. Which of the following threats to validity are most relevant here? 1. Selection bias2. Maturation effect3. Instrumentation bias4. Interaction of selection and treatment
- 11, 3 and 4 only
- 22 and 3 only
- 31, 2 and 4 only✓
- 41 and 4 only
Correct answer
1, 2 and 4 only
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