What basic research technique can be used to avoid biased samples?
A) Blind assignment to groups
B) Double-blind assignment to groups
C) Two-way ignorant assignment to groups
D) Random assignment to groups

Question

Quizplus · Accepted Answer

Random assignment to groups is the best basic research technique to avoid biased samples. By randomly assigning participants to different groups, every participant has an equal chance of being assigned to any group, thus minimizing the likelihood of any systematic biases in the sample. Blind and double-blind assignment to groups may help to avoid biases related to experimenter or participant expectancies, but they do not necessarily ensure a representative or unbiased sample. Two-way ignorant assignment to groups is not a recognized technique.

What Basic Research Technique Can Be Used to Avoid Biased