APA FORMAT, CITATION AND REFERANCE.
Post a brief outline of the case study and consider the conclusion that “the vocational rehabilitation intervention program may be effective at promoting full-time employment.”
What statistical information shows whether the program was effective (or not)?
Review the factors that limit the internal validity of a study (history, maturation, testing, instrumentation, statistical regression, selection bias, and attrition).
Select and explain which of these factors might limit the ability to draw conclusions regarding cause-and-effect relationships.
Flannelly, K. J., Flannelly, L. T., & Jankowski, K. R. B. (2018). Threats to the internal validity of experimental and quasi-experimental research in healthcareLinks to an external site.. Journal of Health Care Chaplaincy, 24(3), 107–130. https://doi.org/10.1080/08854726.2017.1421019
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