If participants are able to choose treatment in a scientific study, this is called a ____________ that is a source of bias that could influence the results.

Question

Quizplus · Accepted Answer

When participants are able to choose their treatment, it introduces a selection factor which can influence the results and cause bias. This is because the individuals who choose a certain treatment may already have preexisting characteristics or preferences that differ from those who choose another treatment, and these differences can affect the outcome of the study.

If Participants Are Able to Choose Treatment in a Scientific