The hallmark of the true experiment is control. The experimenter is in control of many facets of the research design. As we will see, the purpose of this control is to reduce the influence of extraneous variables so that changes in the dependent variable can be attributed to the independent variable.

Informed consent refers to participants agreeing to their role in an experiment only after they have been adequately informed of all the risks and benefits that this activity involves. In order to avoid ethical problems, participants should only participate once they possess this information.

First of all, the participation of any human subject must be voluntary. The participants should be there willingly and not under conditions of threat, coercion or bribing. Secondly, before starting the experiment, researchers must obtain an informed consent signed by each participant.

List of Advantages of Experimental Research. 1. It gives researchers a high level of control. They can remove or control other factors that may affect the overall results, which means they can narrow their focus and concentrate solely on two or three variables.

Experimental research is research conducted with a scientific approach using two sets of variables. The first set acts as a constant, which you use to measure the differences of the second set. The research should establish a notable cause and effect. …

The experimental method involves the manipulation of variables to establish cause and effect relationships. The key features are controlled methods and the random allocation of participants into controlled and experimental groups. An experiment is an investigation in which a hypothesis is scientifically tested.