A(n) _____ is a special type of extraneous variable that varies with the independent variable, was not intended to be manipulated, and may be responsible for the effect on the dependent variable.
The answer to this problem is the "compounding variable" . It is a special type of extraneous variable that directly varies with the independent variable and considered was not intended to be manipulated and may be responsible and reason for the effect on the dependent variable. This type of extraneous variable has a potential of influencing the dependent variable.
