Minimizing Bias and the Intervention Fidelity on Experimental Designs

Health, Medicine, Nursing
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Health, Medicine, Nursing
Question 1
A researcher uses the three criteria, manipulation, randomization and control, to minimize bias and decrease threats to internal validity by refraining from assigning subjects to groups based on their particular, extreme scores so as to have effective control during the research process. Manipulation of a variable in a particular research study entails conducting an experiment whereby the manipulated variable is referred to as the independent variable, which contains several conditions or levels. Recruiting larger groups of participants required for any statistical analysis aids in minimizing bias and threats in internal validity, an idea that is crucial to experimental designs, all of which are crucial in variable manipulation (Beins,2017). Additionally, a researcher can also utilize the randomization criteria by using random selection, sampling, and various random assignments to subjects. Randomization is crucial in most clinical trials because it aids prevent selection bias and also aids ensure against accidental bias.
Question 2
I think the statement that randomized clinical trials (RCT) provide the strongest level of evidence for an individual study when using an evidence-based model is true because RCTs are given the highest levels since they are designed to be unbiased and have lesser risks of systematic errors. An example is a case whereby randomly selecting subjects to several treatment groups, and the studies also randomize the confounding factors that may easily bias the results.
Question 3
When conducting an experimental design as a researcher, I will use the int...