Paper 1 · Research Aptitude
A manipulated independent variable is called
AExtraneous variable
BIntervening variable
CSubject variable
DActive variable ✓ Correct
Correct answer: (D) Active variable — A manipulated independent variable is called an active variable, so that is the answer.
Explanation
★A manipulated independent variable is called an active variable, so that is the answer.
★When the researcher actively manipulates the independent variable, it is an active variable.
★So the very act of manipulation makes it active rather than merely observed.
★An extraneous variable is an unwanted outside variable, not the manipulated one.
★An intervening variable comes between cause and effect and is not manipulated.
★A subject variable is a pre-existing trait of the participant, so the manipulated independent variable is an active variable.
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