Provide an example of experimental, quasi-experimental, and nonexperimental research from the GCU Library and explain how each research type differs from the others. When replying to peers, evaluate the effectiveness of the research design of the study for two of the examples provided.
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Experimental research: The influence of temperature on the state of matter (solid/liquid) is an example of experimental research collected from the GCU library.
Quasi-experimental research: The efficacy of electrical impulses on wrist mobility in stroke patients is an example of quasi-experimental study acquired from the GCU library.
Nonexperimental research: The effect of infection on the development of the fetus in an anticipated mother is an example of non-experimental study found in the GCU library.
The assignment of variables/research subjects during the study is the difference between experimental, quasi-experimental, and nonexperimental research designs.
The example offered in experimental research aids in the analysis of a matter’s stability.
The example given under quasi-experimental research aids in identifying therapies that can be utilized to improve a person’s quality of life after a stroke.
The experimental research design is a study in which a hypothesis is created first, and then an experiment is created to assess the theory’s validity. The input variables are in charge of the research in this study, and the effect of modifying the input variables is being tracked.
The quasi-experimental design is a research in which the effect of an intervention on a certain population is investigated without the subjects being randomly assigned to the intervention.
The nonexperimental research design is a study in which the researcher does not change the independent variables and the research subjects are not allocated randomly, implying that a defined population is chosen to test the hypothesis.
The following are some examples of various study designs:
Experimental research: The influence of temperature on the state of matter (solid/liquid) is an example of experimental research collected from the GCU collection. The independent variable (temperature) is changed in this experiment, and the effect on the state of matter is measured. The information gained from this study aids researchers in quantifying a matter’s thermal stability.
Quasi-experimental research: The efficacy of electrical impulses over wrist movement in patients suffering from stroke (a condition in which nerve cells start to die due to insufficient supply of oxygen/nutrients to the brain) that could result in paralysis is an example of quasi-experimental research retrieved from GCU library. The effect of electrical impulses on wrist mobility in a defined population (lack of randomization) suffering from stoke is investigated in this study.
Nonexperimental research: The effect of infection on the development of the fetus in an anticipated mother is an example of non-experimental study found in the GCU library. The dependent variable (pace of fetal development) is not altered in this study, and expectant moms with and without a history of infection are chosen for the study, which will evaluate the influence of infection on fetal growth rate.
The assignment of variables/research subjects during the study is the difference between experimental, quasi-experimental, and nonexperimental research designs.
The researcher manipulates, monitors, records, and infers the effect of independent variables on dependent variables in an experimental research design.
In a quasi-experimental design, the independent factors (electrical impulses) are altered according to the experiment’s needs, and the effect on the dependent variables/nonrandomized population (stroke victims) is investigated.
In a nonexperimental research design, the effect of one dependent variable (infection in the presence of favorable conditions) is compared to the effect of another dependent variable (fetal development) in a nonrandomized population (independent variable) (expected mother with/without infection history).
The example offered in experimental research aids in studying the stability of a matter in which the temperature is gradually increased or decreased according to the study’s requirements, and the effect of changing temperature on the condition of matter is recorded. This aids in the quantification of a substance’s melting, boiling, freezing, and vaporizing points.
The example given under quasi-experimental research aids in identifying interventions that can be used to improve the quality of life for a person suffering from stroke, in which the voltage of electrical impulses is fine-tuned with observed movements in the person’s wrist, with the goal of reducing the effects of the stroke and allowing the person to live an independent life
References:
Chew B. H. (2019). Planning and Conducting Clinical Research: The Whole Process. Cureus, 11(2), e4112. h..m@gcu.ac.uk. (n.d.). Experimental research | PILOT. Glasgow Caledonian University: The University for the Common Good | GCU. https://www.gcu.ac.uk/library/pilot/researchskills/researchmethods/experimentalresearch/