Scientists have found that people who agree to participate in research studies differ systematically from people who do not. This problem is known as ______.

Question

Quizplus · Accepted Answer

Volunteer bias refers to the systematic differences between those who volunteer to participate in research studies compared to those who do not. This can lead to a biased sample and limit the generalizability of study findings. Population bias refers to a bias in the sample selection process that results in a sample that is not representative of the population. Control variance refers to the variability of the dependent variable that is due to differences in the way the study is conducted. The placebo effect refers to the phenomenon in which a person experiences a perceived benefit from a treatment that has no active ingredients.

Scientists Have Found That People Who Agree to Participate in Research