Preexperimental designs:
A)are the weakest experimental designs.
B)control for most sources of internal invalidity.
C)control for most sources of external invalidity.
D)are excellent for drawing causal inferences.
E)are highly recommended by Campbell and Stanley.

Question

Quizplus · Accepted Answer

Preexperimental designs are considered weak because they lack the control and rigor of true experimental designs. They are more susceptible to internal and external invalidity, which limits the extent to which causal inferences can be drawn. While they may have some utility in exploratory research or when experimental designs are not feasible, they are generally not recommended as the primary method for examining causal relationships.

Preexperimental Designs