Which of the following aspects is critical the experimental but not correlational design?
A) the ability to test predictions.
B) the use of variables.
C) the use of operational definitions.
D) random assignment.

Question

Quizplus · Accepted Answer

Random assignment is critical to experimental design because it allows for the control of extraneous variables and helps establish cause-and-effect relationships between variables. Correlational design does not involve random assignment and therefore cannot establish causality. The other options listed (the ability to test predictions, the use of variables, and the use of operational definitions) are important to both experimental and correlational design.

Which of the Following Aspects Is Critical the Experimental but Not