Question

Which one of the following methods uses a control group while validating the impact of intervention programmes?

• A. Qualitative interviews
• B. Quantitative survey
• C. Experimental designs
• D. National sample survey

Hint:

Experimental designs are crucial for testing the effectiveness of interventions using control and experimental groups.

Answer 1

The Correct Option is C

Step 1: Understanding the methods.
Experimental designs are research methods that involve the manipulation of variables to observe the effects, with a control group being used to compare the results. This method allows for the evaluation of the impact of intervention programs.

Step 2: Analyzing the options.
- (A) Incorrect, qualitative interviews are used for gathering in-depth perspectives but do not typically involve control groups.
- (B) Incorrect, quantitative surveys involve data collection but do not necessarily use control groups in the validation of interventions.
- (C) Correct, experimental designs use a control group to validate the impact of intervention programs by comparing the experimental group to the control group.
- (D) Incorrect, national sample surveys do not typically involve control groups in the context of intervention studies.
Step 3: Conclusion.
Thus, the correct answer is (C) Experimental designs.