Quasi-Experimental VS. Experimental Study Design, What is the Difference?

With an experimental research study, the participants in both the treatment (product users) and control (product non-users) groups are randomly assigned. Quasi-experimental research designs do not randomly assign participants to treatment or control groups for comparison. Quasi-experimental designs are often used in educational research since students and teachers are not typically able to be randomly assigned to districts, schools, or classrooms for research purposes.