NRS 433V Topic 3 DQ 1 Provide examples of experimental and nonexperimental research design

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Topic 3 DQ 1

Aug 8-10, 2022

Provide examples of experimental and nonexperimental research design. Contrast the levels of control applied to each.

Krishna Turner

Aug 12, 2022, 10:47 PM(edited)

Replies to Krishna Turner

Experimental studies are controlled studies that are true experiments. The researchers multiplate one or more variables to determine how it has an effect other variable. Researchers uses random assignment, and it is less bias. Non-experimental research design measures the statistical relationship between two or more variable, and the cause and effect of the relationship. (GCU, 2018)

Non-experimental can be a survey or observation of one or more group of subjects. This study lacks element of control and is based on calculating simple prevalence rates. For instance, observing people that has a lung injury secondary to a blunt chest trauma. This study is done by multiple cross-sectional observation which can identify changes that are happening at different time intervals and looking at different samples. (Thompson & Panacek, 2007)

Experimental is done with a control group. The subjects are explained the risk and benefits of the study and must consent to participating in it. The participant must meet the criteria of the study, for instance a study that is conducted on changing children eating behaviours. The researcher provides the children with free fruits and vegetables and observes how taste can positively influence the children attitudes and eating behaviour. (DeCosta et al., 2017)

Reference:

DeCosta, P., Møller, P., Frøst, M. B., & Olsen, A. (2017). Changing Children’s eating behaviour – a review of Experimental Research. Appetite, 113, 327–357. https://doi.org/10.1016/j.appet.2017.03.004

Grand Canyon University (Ed). (2018). Nursing research: Understanding methods for best practice. Retrieved from https://lc.gcumedia.com/nrs433v/nursing-research-understanding-methods-for-best-practice/v1.1

Thompson, C. B., & Panacek, E. A. (2007). Research study designs: Non-experimental. Air Medical Journal, 26(1), 18–22. https://doi-org.lopes.idm.oclc.org/10.1016/j.amj.2006.10.003

Kadija Tejan-deen

replied toKrishna Turner

Aug 12, 2022, 11:28 PM

Replies to Krishna Turner

Hello Krishna,

Good post. Experimental research is the type of research that uses a scientific approach towards manipulating one or more control variables and measuring their defect on the dependent variables, while non-experimental research is the type of research that does not involve the manipulation of control variables. Nonexperimental research designs provide Level IV evidence. The strength of evidence provided by nonexperimental designs is not as strong as that for experimental designs because there is a different degree of control within the study; that is, the independent variable is not manipulated, subjects are not randomized, and there is no control group (Glasofer & Townsend, 2020). Yet the information yielded by these types of studies is critical to developing a base of evidence for practice and may represent the best evidence available to answer research or clinical questions.

References

Glasofer, A., & Townsend, A. B. (2020). Determining the level of evidence: Nonexperimental research designs. Nursing2020 Critical Care, 15(1), 24-27.

Dilshoda Osorio

replied toKadija Tejan-deen

Aug 14, 2022, 7:37 PM

Replies to Kadija Tejan-deen

Experimental research gathers the information you need to make the best judgments possible (Thompson, 2007). For example employee skills in a hospital or organization, and school evaluations of different teachers’ teaching approaches are all examples of evaluations.

Researchers in non-experimental study examine factors as they happen naturally, with no further manipulation (Thompson, 2007). For example researchers utilize it to employ mathematical analysis methods to correlate two or more variables.

Thompson, C. B., & Panacek, E. A. (2007). Research study designs: non-experimental. Air Medical Journal, 26(1), 18–22. https://doi-org.lopes.idm.oclc.org/10.1016/j.amj.2006.10.003

Justina Aguilar

replied toKrishna Turner

Aug 13, 2022, 11:36 AM

Replies to Krishna Turner

Hi Krishna,

I enjoyed your post. I’m glad you mentioned obtaining consent. “Informed consent demonstrates respect for personal autonomy and is an important ethical requirement in research. The consent process clarifies to participants that research is distinct from clinical care, as the purpose is to benefit society rather than solely the individual. Even if consent is not legally required in a specific circumstance, researchers should consider what information is important to convey to ensure respect for participant autonomy” (Why is informed consent required? 2014). Consent is vital for the researcher to procure.

Reference

Why is informed consent required? Genome.gov. (2014).

https://www.genome.gov/about-genomics/educational-resources/fact-sheets/why-is-informed-consent-required

Amadu Conneh

Aug 11, 2022, 8:11 PM

Published

Replies to Krishna Turner

Hi Class,

Experimental research designs involve manipulating one or more variables and observing how the changes have an impact on other variables. Experimental designs typically have high levels of control; the researcher has extensive control over the variables being studied and can modify them to achieve desired results.

Nonexperimental designs, on the other hand, are those in which the researcher observes the variables as they naturally occur without changing any of the variables. Nonexperimental designs typically have limited levels of control; the researcher has little influence over the variables being studied and can only watch them as they naturally occur.

Randomized controlled trials, in which participants are randomly assigned to various treatment groups, and quasi-experimental designs, in which the researcher does not have complete control over the assignment of participants to treatment groups, are two examples of experimental research designs.

Observational studies, in which the researcher just watches participant activity without getting involved, and surveys, in which participants are questioned about their ideas or activities, are two examples of nonexperimental research designs. The fundamental benefit of experimental designs is that they enable the researcher to draw conclusions about causality, i.e., that the manipulation of the study variables was what led to the observed changes in the other variable.

NRS 433V Topic 3 DQ 1 Provide examples of experimental and nonexperimental research design

Nonexperimental designs typically need less money and time to implement than experimental designs, which is their principal advantage.

References:

Miller, C.J., (2020). Experimental and quasi-experimental designs in implementation research.

https://www.sciencedirect.com/science/article/pii/S0165178119306833?via%3Dihub

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