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Write My Essay For MeDiscussion Forum 4: Critical Thinking
1. Minimizing bias and decreasing threats to internal validity is important to experimental designs. How will a researcher use the three criteria, manipulation, randomization, and control to minimize bias and decrease threats to internal validity?
2. Many times, researchers state that randomized clinical trials (RCT) provide the strongest level of evidence for an individual study when using an evidence-based model. As a researcher, why do you think this statement is true?
3. When conducting an experimental design, how will you as a researcher, use intervention fidelity to increase the strength and quality of the evidence provided by the findings of the study?
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4. What is your cosmic question? (This is a question you ask your peers to respond to based on the chapter discussed in class this week i.e. Quantitative studies).
1. Minimizing bias and decreasing threats to internal validity is important to experimental designs. How will a researcher use the three criteria, manipulation, randomization, and control to minimize bias and decrease threats to internal validity?
In designing a well-planned study researcher must address issues related to the validity of the experiment in order to eliminate bias and focus on the intended outcome. Therefore, internal validity must be established even though there are some significant threats such as “history, maturation, testing, instrumentation, mortality, and selection bias” (LoBiondo-Wood & Haber, 2018, p. 156). As a result, an experimental design are identified through the properties of randomization, control, and manipulation. Randomization is used to eliminate bias by distributing the experimental change using subjects or groups tested equally to ensure validity. However, “control is acquired by manipulating the independent variable, randomly assigning subjects to a group, using a control group, , and preparing intervention and data collection protocols that are consistent” (LoBiondo-Wood & Haber, 2018, p. 167). Thus, in order to limit bias, the researcher holds the condition constant. Another property is manipulation which is influenced by the independent variable intentionally to observe if change will affect the experiment.
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2. Many times, researchers state that randomized clinical trials provide the strongest level of evidence for an individual study when using an evidence-based model, as a researcher, why do you think this statement is true?
“A randomized controlled trial is a study where people get allocated by chance alone to receive one of several unique clinical interventions. One of them is the standard of comparison, which is traditionally referred to as the control group”(Gaille, 2020). As a researcher I believe that random clinical trials provide the strongest level of evidence-based model because it eliminates bias through the preventing the manipulation of results, provide immediate comparative outcomes, and offers a high level of statistical probability (Gaille, 2020).
3. When conducting an experimental design, how will you as a researcher, use intervention fidelity to increase the strength and quality of the evidence provided by the findings of the study?
Fidelity means for lack of better term reliability. According to Lobiondo-Wood intervention fidelity is a plan that the researcher develops in order to be able to fulfill an intervention for each subject with the same manner and same conditions (Lobiondo-Wood & Haber, 2018, p. 152). As a researcher I would utilize mediation loyalty to better the nature of proof by ensuring all members get similar intercessions under similar conditions.
4 . What is your cosmic question? (This is a question you ask your peers to respond to base on the chapter discussed in class this week i.e. quantitative studies).
How would you manipulate an independent variable?
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References:
Gaille, L. (2020, March 2). 14 Advantages and disadvantages of a randomized controlled trial. https://vittana.org/14-advantages-and-disadvantages-of-a-randomized-controlled-trial
LoBiondo-Wood, G., Haber, J. (2018). Nursing Research: Methods and critical appraisal for evidenced -based practice. (9thed.). St. Louis, Missouri: Elsevier.
SAMPLE SOLUTION
Minimizing bias and decreasing threats to internal validity
Internal validity is defined as the extent to which the derived results fully represent the population’s truth. In designing a well-planned study, a researcher must address issues related to the experiment’s validity to eliminate bias and help achieve the intended results. Although internal validity has to be achieved, there are significant threats that must be considered. The threats include history, maturation, testing, instrumentation, mortality, and selection bias” (LoBiondo-Wood & Haber, 2018, p. 156). Consequently, an experimental design has to be identified through the properties of randomization, control, and manipulation to help overcome | GET AN EXPERT FOR YOUR ASSIGNMENT / used to eliminate bias by distributing the experimental change using subjects or groups with equal weights to help achieve validity. Randomization ensures that every subject has an equal chance of being assigned an intervention. On the other hand, “control is achieved by manipulating the independent variable, randomly assigning subjects to a group, using a control group, preparing intervention…
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