RSCH 8100A Week 6 Discussion: Designing Quantitative Research
Researchers consider validity and reliability with each new study they design. This is because validity and reliability are not fixed but rather reflect a particular study’s unique variables, research design, instruments, and participants.
In the context of research design, two types of validity, which speak to the quality of different features of the research process, are considered: internal validity and external validity. Assuming that the findings of a research study are internally valid—i.e., the researcher has used controls to determine that the outcome is indeed due to manipulation of the independent variable or the treatment—external validity refers to the extent to which the findings can be generalized from the sample to the population or to other settings and groups. Reliability refers to the replicability of the findings.
For this Discussion, you will consider threats to internal and external validity in quantitative research and the strategies used to mitigate these threats. You will also consider the ethical implications of designing quantitative research.
Resources
Be sure to review the Learning Resources before completing this activity.
Click the weekly resources link to access the resources.
By Day 4
Post an explanation of a threat to internal validity and a threat to external validity in quantitative research. Next, explain a strategy to mitigate each of these threats. Then, identify a potential ethical issue in quantitative research and explain how it might influence design decisions. Finally, explain what it means for a research topic to be amenable to scientific study using a quantitative approach.
Be sure to support your Main Issue Post and Response Post with reference to the week’s Learning Resources and other scholarly evidence in APA Style.
Read a selection of your classmates’ postings.
By Day 6
Respond to a classmate by offering a strategy to address the ethical issue she or he identified.
Note: For this Discussion, you are required to complete your initial post before you will be able to view and respond to your colleagues’ postings. Begin by clicking on the Reply button to complete your initial post. Remember, once you click on Post Reply, you cannot delete or edit your own posts and you cannot post anonymously. Please check your post carefully before clicking on Post Reply
SOLUTION RSCH 8100A Week 6 Discussion: Designing Quantitative Research
Hello Class,
Threat to internal validity
One significant threat to internal validity is selection bias, which occurs when the participants in different study groups are not equivalent at the start of the study. This imbalance can arise when participants are not randomly assigned to groups, leading to differences that may influence the study’s outcomes (Polit & Beck, 2021). For example, in a nursing study evaluating the effectiveness of a new intervention for reducing hypertension, if participants in the intervention group are healthier overall compared to those in the control group, the observed effects may not be attributable to the intervention but to pre-existing differences between the groups….
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(FINAL ANSWER) RSCH 8100A Week 6 Assignment: Annotation of a Quantitative Research Article