An experiment can be assumed to have internal validity if:
A)the dependent variable is valid.
B)there is a strong manipulation of the independent variable.
C)random assignment and experimental control is employed.
D)confounding variables are present.

Question

Quizplus · Accepted Answer

Random assignment and experimental control are essential components of an experiment's internal validity because they help to eliminate the influence of extraneous variables, making it more likely that the effect observed in the dependent variable is due to the manipulation of the independent variable. The validity of the dependent variable and the presence of confounding variables are also important considerations, but they alone are not sufficient to ensure internal validity. The strength of the manipulation is also not a definitive factor in determining internal validity.

An Experiment Can Be Assumed to Have Internal Validity If