Answer to Question #320490 in English for DWA

Question

Quasi-experimental designs are used particularly in circumstances where it is not possible to implement classical experimental designs. In this design, researchers have no control over the independent variable. Using your own understanding, explain how the types of quasi-experimental designs differ in terms of their characteristics

Answer 1

A true experiment uses random assignment of the participants while quasi-experiments does not. This allows its wide use in ethical problems. Quasi-experiments allots the participants based on a study, unlike true experiments where they have an equal chance of getting into any of the groups. Quasi-experimental research is similar to experimental research in that there is manipulation of an independent variable. It differs from experimental research because either there is no control group, no random selection, no random assignment, and/or no active manipulation. Quasi-experimental research involves the manipulation of an independent variable without the random assignment of participants to conditions or orders of conditions. Among the important types are non-equivalent groups designs, pretest-posttest, and interrupted time-series designs.