The best experimental design ________.
A) includes a large sample size for each condition
B) includes a control
C) alters only one condition between the controls and the experimental condition
D) includes a large sample size and a control, and alters only one condition between the controls and the experimental condition

Question

Quizplus · Accepted Answer

The best experimental design includes a large sample size to increase the reliability of the results and a control to isolate the effect of the manipulated variable. Additionally, altering only one condition between the controls and experimental condition helps to ensure that any observed differences are due to the single variable being tested. Therefore, the best choice is D, which includes all of these important elements.

The Best Experimental Design ________