In your initial post, consider the following:
Compare and contrast the characteristics of experimental and nonexperimental quantitative research.
State the research question the researchers were trying to answer in the study.
Identify the type of quantitative research design that was used in the assigned study.
Evaluate whether the researchers’ conclusion follows logically from the evidence presented.
Identify threats to internal and external validity that might apply to how this study was conducted.
Determine whether validity threats were addressed by the researchers. If so, describe how this was done.
Summarize ethical considerations that were mentioned in the research report.
Assess what ethical considerations apply to the design of the study but that were not mentioned by the researchers.
Explain how you might do a study on this topic differently and why your approach would be more appropriate than the one used by the researchers.
In experimental research, variables are the specific characteristics or factors that are manipulated and measured in order to test a hypothesis. Non-experimental research observes variables in their natural state instead of manipulating them. One of the main differences between experimental and non-experimental research is the level of control the researcher has over the variables. In experimental research, the researcher has complete control over the independent variable and can manipulate it to test the hypothesis. In non-experimental research, the researcher does not have this level of control and must rely on observations and measurements of naturally occurring variables.
Experimental Quantitative Research
Nonexperimental Quantitative Research
Research Question:
The researchers were trying to answer the following research question:
To answer this question, the researchers conducted an experimental study. They randomly assigned participants to two groups: a treatment group and a control group. The treatment group received instruction using the specific teaching method, while the control group received instruction using a traditional teaching method. The researchers then measured the participants’ test scores before and after the instruction.
The results of the study showed that the participants in the treatment group had significantly higher test scores than the participants in the control group. This suggests that the use of the specific teaching method did indeed improve student test scores.
Conclusion:
Experimental and nonexperimental quantitative research are both useful tools for answering research questions. Experimental research is more powerful than nonexperimental research in terms of making causal inferences. However, nonexperimental research is often easier and less time-consuming to conduct. The best type of research to use depends on the specific research question being asked.