A researcher is assessing the reliability of a new instrument that was constructed to measure pain perception following cardiac catheterization.
The Cronbach's alpha obtained from a pilot study of the tool was 0.35. Which evaluation does the alpha value indicate?
There is a moderate amount of inter-rater reliability for this tool.
The instrument needs revision due to a lack of internal consistency.
The tool will consistently measure pain perception in clients.
Numerous inverse relationships exist among items on the scale.
The Correct Answer is B
Choice A rationale:
Cronbach's alpha is a measure of internal consistency, not inter-rater reliability. Inter-rater reliability assesses the degree of agreement between different raters or observers, which is not applicable in this context.
Choice B rationale:
This is the correct answer. A Cronbach's alpha value of 0.35 indicates poor internal consistency for the instrument. In other words, the items in the tool do not consistently measure the same underlying construct (pain perception). A low alpha value suggests that the items in the instrument may not be reliably measuring the intended concept and that revision may be necessary to improve the tool's consistency.
Choice C rationale:
The statement "The tool will consistently measure pain perception in clients" is not supported by the low Cronbach's alpha value of 0.35. A low alpha suggests that the tool does not demonstrate consistent measurement of pain perception.
Choice D rationale:
Cronbach's alpha does not provide information about the presence of inverse relationships among items on the scale. It assesses internal consistency, which is about the degree to which items on the scale are interrelated and measure the same construct. A low alpha indicates poor internal consistency but does not specifically indicate the presence of inverse relationships.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
This study is experimental because it involves the manipulation of an independent variable (participation in a specified 3-month strenuous exercise program) to assess its impact on a dependent variable (Hemoglobin A1c findings) in two groups (participants and non-participants).
Choice B rationale:
An exploratory study typically aims to explore a new topic or area and may involve surveys, interviews, or observations to generate hypotheses and ideas. It does not necessarily involve an experimental design.
Choice C rationale:
A correlational study examines the relationship between variables but does not involve experimental manipulation of an independent variable.
Choice D rationale:
A developmental study typically investigates changes or development over time, such as in child development, but does not necessarily involve experimental manipulation of variables.
Correct Answer is C
Explanation
Choice C rationale:
Provide a context for the research question that describes relevant theory and results of previous studies. A literature review serves to provide context for the research question by summarizing relevant theories, previous research findings, and existing knowledge related to the topic. It helps researchers understand the current state of knowledge in their area of interest and identifies gaps or areas where further research is needed. While other choices may also be relevant to some extent, choice C directly addresses the primary purpose of a literature review in the research process.
Choice A rationale:
Identifying the research design and explaining the rationale for choosing the research methodology is typically part of the research methodology section, not the literature review.
Choice B rationale:
Ensuring that the study has not already been completed and that the findings will provide a unique contribution is important but not the primary purpose of a literature review. It is more related to conducting a preliminary review of existing literature before conducting the study.
Choice D rationale:
Describing how the study findings can be used in the future and identifying the need for conducting the study are important aspects of the discussion and conclusion sections of a research report, not the literature review.
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