Dr. Pliny did not tell her subjects which group (which level of the independent variable) they were in. She withheld this information to guard against:

Question

Quizplus · Accepted Answer

Withholding information about group assignment from subjects helps to prevent subject bias, as it stops them from altering their behavior based on their knowledge of the experiment, thus ensuring more genuine responses.

Dr Pliny Did Not Tell Her Subjects Which Group (Which