In psychological studies,random assignment is used to ensure that
A)there will be an independent and a dependent variable.
B)each person has an equal chance of being assigned to each group.
C)the control group does not know the purpose of the study.
D)the experimenter won't know who is in each group.

Question

Quizplus · Accepted Answer

Random assignment is the process of assigning participants to different groups in a study randomly. The main purpose of random assignment is to ensure that each participant has an equal chance of being exposed to any of the treatment conditions and reduces the chance of any preexisting differences between groups. Therefore, option B is correct. Option A is incorrect as random assignment is not necessarily related to having independent and dependent variables. Option C is incorrect as the purpose of the study is usually explained in the informed consent process, and not knowing the purpose could be unethical. Option D is incorrect as the experimenter can have knowledge of who is in each group while still maintaining the randomized assignment process.

In Psychological Studies,random Assignment Is Used to Ensure That