External validity in quantitative research

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.

Required Readings

Babbie, E. (2017) Basics of social research (7th ed.). Boston, MA: Cengage Learning.

  • Chapter 3, “The Ethics and Politics of Social Research”

Burkholder, G. J., Cox, K. A., & Crawford, L. M. (2016). The scholar-practitioner’s guide to research design. Baltimore, MD: Laureate Publishing.

  • Chapter 7, “Quality Considerations”

Document: Threats to Internal Validity (PDF)

Walden University: Center for Research Quality. (2015b). Research ethics & compliance: Application & general materials. Retrieved from http://academicguides.waldenu.edu/researchcenter/orec/application
Download the “Research Ethics Planning Worksheet” document.

Walden University: Center for Research Quality. (2015c). Research resources: Research planning & writing. Retrieved fromhttp://academicguides.waldenu.edu/researchcenter/resources/planning
Download the “Litmus Test” document.

Walden University. (2015a). How do I find an article that reports on research that uses a specific methodology? Retrieved from http://academicanswers.waldenu.edu/faq/72633

Walden University Writing Center. (2015). Common course assignments: Annotated bibliographies. Retrieved from http://academicguides.waldenu.edu/writingcenter/assignments/annotatedbibliog

Answer preview

The potential ethical issue in quantitative research that is likely to occur is experimental bias. The researcher may be forced to use a certain survey that may not suit his or her selected variable (Babbie, 2017). In such a situation, when a researcher selects variables that are of his/her preference, this may interfere with the study being conducted. This might influence the design decisions by making the experimental study less controlled and also more contrived. Therefore, the researcher would not be in a position to come up with a realistic hypothesis because already the study will have been corrupted.

In quantitative approach, research is usually conducted in a larger population and different survey methods are used to collect data. In this case, when the research topic is amenable to scientific study, it means that the approach used is in researching the topic can be controllable or flexible in a way that a large sample as that in the study and different research methods can be used so that the issues encountered in the study can be addressed in an appropriate manner.

[697 Words]

External validity in quantitative research
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