When choosing whether to put a research participant into a treatment group or a control group,researchers should use
A)first-in,first-out assignment.
B)first-in,last-out assignment.
C)random assignment.
D)convenience assignment.

Question

Quizplus · Accepted Answer

Random assignment ensures that participants are assigned to treatment and control groups without any bias, increasing the likelihood of obtaining accurate and unbiased results. First-in, first-out and first-in, last-out assignment may lead to selection bias, while convenience assignment may result in non-representative samples.

When Choosing Whether to Put a Research Participant into a Treatment