If there is low validity in a study, it usually means that the
research design is flawed and the results will be of little or no
value. Four different aspects of validity should be considered when
reviewing a research design: statistical conclusion validity,
internal validity, construct validity, and external validity. In
this Discussion, you consider the importance of each of these
aspects in judging the validity of quantitative research.
To prepare:
• Review the information in Chapter 10 (See Attachments) of
the course texton rigor and validity.
• Read the method section of one of the following
quasi-experimental studies (See Attachments). Identify at least one
potential concern that could be raised about the study’s internal
validity.
o Metheny, N. A., Davis-Jackson, J., & Stewart, B. J.
(2010). Effectiveness of an aspiration risk-reduction protocol.
Nursing Research, 59(1), 18–25.
o Padula, C. A., Hughes, C., & Baumhover, L. (2009).
Impact of a nurse-driven mobility protocol on functional decline in
hospitalized older adults. Journal of Nursing Care Quality, 24(4),
325–331.
o Yuan, S., Chou, M., Hwu, L., Chang, Y., Hsu, W., & Kuo,
H. (2009). An intervention program to promote health-related
physical fitness in nurses. Journal of Clinical Nursing, 18(10),
1,404–1,411.
Consider strategies that could be used to strengthen the
study’s internal validity and how this would impact the three other
types of validity.
Think about the consequences of an advanced practice nurse
neglecting to consider the validity of a research study when
reviewing the research for potential use in developing an
evidence-based practice.
Post the title of the study that you selected (Feel free to select any of the three above mentioned) and your analysis of the potential concerns that could be raised about the study’s internal validity. Propose recommendations to strengthen the internal validity and assess the effect your changes could have with regard to the other three types of validity. Discuss the dangers of failing to consider the validity of a research study.
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