Which of the following are the means of control in experimental research?

1.Controlling physical settings

2.Choice of participants

3.Statistical analysis

4.Focusing on short-term effects

5.Sidetracking the causal factors

A1, 2 & 3 only ✓ Correct

B2, 3 & 4 only

C3, 4 & 5 only

D1, 4 & 5 only

Correct answer: (A) 1, 2 & 3 only

Explanation

Control in experimental research is achieved by controlling physical settings, choosing participants carefully and using statistical analysis.

A controlled setting removes extraneous influences on the outcome.

Deliberate selection or randomisation of participants balances the groups.

Statistical control adjusts for variables not held constant physically.

Focusing on short term effects is a scope choice, not a control device.

Sidetracking causal factors would defeat control rather than secure it.

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