What aspect of experimental research design allows scholars like Arceneaux and Johnson to assume that the people in their treatment groups are similar to each other and that differences between them after exposure to different treatments are attributable to those treatments rather than underlying social and demographic differences?

Question

Quizplus · Accepted Answer

Random assignment allows for the equal distribution of underlying social and demographic differences among treatment groups, thereby allowing researchers to attribute any differences observed to the treatments themselves.

What Aspect of Experimental Research Design Allows Scholars Like Arceneaux