A nurse researcher is studying the effects of exercise and sleep on blood pressure. The researcher identifies blood pressure as which type of variable?
Exploratory
Correlational
Dependent
Independent
The Correct Answer is C
In research studies, correctly identifying the type of variable is crucial to ensure that the design, data collection, and analysis are appropriately structured to answer the research question. Therefore, it is essential to determine which variable is being manipulated or measured in response to the others. This helps in distinguishing independent from dependent variables and understanding the nature of the research.
Rationale for correct answer:
C. A dependent variable is the outcome or response that is measured in a study. In this case, blood pressure is what the researcher is observing or measuring to determine the effect of the independent variables (exercise and sleep).
Rationale for incorrect answers:
A. Exploratory: This refers to a type of research design. Exploratory research is conducted when the problem is not clearly defined, and the goal is to gather preliminary data or insights.
B. Correlational: This is also a type of study design. A correlational study assesses the strength and direction of the relationship between variables, but it does not involve manipulation of variables like in an experimental or quasi-experimental study.
D. An independent variable is the one that is manipulated or categorized to determine its effect on the dependent variable. In this case, exercise and sleep are the independent variables.
Take home points:
- The dependent variable is the outcome that is being measured or observed to determine the impact of changes in the independent variable.
- Understanding the distinction between types of variables and study designs is essential for designing valid studies and interpreting results accurately.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Nursing theories vary in scope and purpose. Some describe phenomena (descriptive), some explain growth and changes (developmental), others explore complex interactions (systems), and some directly guide clinical decision-making (prescriptive).
Rationale for correct answer:
A. Prescriptive theories guide nursing interventions, predict outcomes, and provide direct instructions for clinical practice.
Rationale for incorrect answers:
B. Descriptive theory: Descriptive theories explain or describe a phenomenon without directing specific nursing actions.
C. Developmental theory: Focuses on the process of growth and development across the lifespan, not on nursing interventions.
D. Systems theory: Examines how components of a system interact, useful for understanding healthcare environments but not specifically for guiding direct care actions.
Take home points
- Prescriptive theories are designed to guide nursing interventions and predict patient outcomes.
- Different theory types serve different purposes-choosing the right one depends on whether you’re describing, explaining, or applying nursing knowledge.
Correct Answer is ["A","B","D","E"]
Explanation
Informed consent (IC) is a critical ethical and legal requirement that ensures respect for a person’s autonomy. It ensures that participants are fully informed about the purpose, procedures, risks, benefits, confidentiality, and voluntary nature of the study.
Rationale for correct answer:
A. “The informed consent (IC) provides you with complete information on the research study.” Informed consent includes comprehensive details about the study's purpose, procedures, risks, benefits, alternatives, and duration. Providing complete information helps the client make an informed decision.
B.“By reviewing the consent with you, I can make sure that you understand the study and what it means for you to participate.” One of the ethical principles of informed consent is ensuring comprehension. The nurse's role is not just to obtain a signature, but to ensure that the client fully understands what participation involves.
D. “The informed consent provides your voluntary agreement to participate in the research study.” This is the essence of informed consent. Signing the form demonstrates that the client has freely and voluntarily agreed to participate without coercion.
E.“The informed consent explains how the data collected from you will be kept confidential during and after the study.” Confidentiality is a key element of informed consent. The document explains how personal data will be protected, who will have access, and how it will be stored and used.
Rationale for incorrect answer:
C. “The informed consent provides details on the limitations of the study.” While a study’s limitations may be addressed in broader scientific discussions or the research publication, they are not typically a core part of informed consent.
Take home points:
- Informed consent is more than just a signature-it is a process of providing clear, complete, and understandable information.
- The nurse investigator plays a vital role in ensuring ethical research participation.
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