walden nurs6052 week 6 discussion latest 2016 October

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Discussion: Validity in Quantitative Research Designs

Validity in research refers to the extent researchers can be
confident that the cause and effect they identify in their research are in fact
causal relationships. 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 of the course text on
rigor and validity.

Read the method section of one of the following
quasi-experimental studies (also located in this week’s Learning Resources).
Identify at least one potential concern that could be raised about the study’s
internal validity.

Metheny, N. A., Davis-Jackson, J., & Stewart, B. J.
(2010). Effectiveness of an aspiration risk-reduction protocol. Nursing
Research, 59(1), 18–25.

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.

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.

By Day 3

Post the title of the study that you selected 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.

Read a selection of your colleagues’ responses.

By Day 6

Respond to at least two of your colleagues in one or more of
the following ways:

Ask a probing question, substantiated with additional
background information, and evidence. Share an insight from having read your
colleagues’ postings, synthesizing the information to provide new perspectives.

Offer and support an alternative perspective using readings
from the classroom or from your own review of the literature in the Walden
Library.

Validate an idea with your own experience and additional
sources.

Make a suggestion based on additional evidence drawn from
readings or after synthesizing multiple postings.

Expand on your colleagues’ postings by providing additional
insights or contrasting perspectives based on readings and evidence.