_____ occurs when participants decide if they wish to be studied in the experimental or control group.
A)Self-selection
B)Random assignment
C)Informed consent
D)Random sampling

Question

Quizplus · Accepted Answer

Self-selection occurs when participants voluntarily choose which group they wish to be in, either in the experimental or the control group. This can introduce bias into the study as there may be differences between the two groups that are not related to the intervention being studied. Random assignment helps to reduce the impact of self-selection bias by randomly assigning participants to either group. Informed consent refers to the process of obtaining permission from participants before they participate in a study, while random sampling refers to the process of selecting a random sample from a larger population.

_____ Occurs When Participants Decide If They Wish to Be