Paper 1 · Research Aptitude
Through which research method is the manipulation of an independent variable and its effect on a dependent variable examined, with reference to a hypothesis, under controlled conditions?
AEx post facto research
BDescriptive research
CCase study research
DExperimental research ✓ Correct
Correct answer: (D) Experimental research — Examining the manipulation of an independent variable under controlled conditions is experimental research, so that is the answer.
Explanation
★Examining the manipulation of an independent variable under controlled conditions is experimental research, so that is the answer.
★Experimental research deliberately manipulates the independent variable.
★It observes the effect on the dependent variable while other conditions are controlled.
★It does this with reference to a hypothesis it is testing, which is the mark of the experiment.
★Ex post facto research works backward from an effect and does not manipulate the cause.
★Descriptive research and case study do not manipulate under control, so this is experimental research.
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