NR449 W5: Validity and Evaluating

A researcher is conducting a study to examine the effectiveness of a new drug on lowering blood pressure. The study has a control group and an experimental group, and the results show a significant difference between the two groups. Which type of validity is the researcher primarily concerned with ensuring in this study?

A nurse researcher is conducting a survey to determine the level of satisfaction of patients with their hospital care. The researcher uses a questionnaire that includes items that have been tested for clarity and ease of understanding. What type of reliability is being assessed by testing the clarity of the questionnaire items?

A study examining the effectiveness of two different therapies for pain management involves repeated measurements taken from the same participants over several months. This type of reliability is referred to as:

In a study to measure anxiety levels before and after an intervention, a researcher administers the same anxiety scale to participants multiple times, and the results are consistent across all assessments. What is being assessed?

A nurse researcher wants to evaluate the content validity of a new depression screening tool. Which of the following actions would best support this evaluation?

A researcher is designing a study to determine if a newly developed instrument accurately measures the concept of "nurse burnout." The researcher finds that the instrument consistently measures burnout in the same way across various populations. What type of validity is the researcher most concerned with?

A study investigating the relationship between a new diet plan and weight loss reports a strong correlation between the two variables. However, the researcher fails to account for other factors such as exercise and metabolism. What is this an example of?

A researcher is conducting a study to evaluate the effect of a new nurse-led intervention on patient outcomes. The researcher uses two different raters to assess patient outcomes, and the results are highly consistent. Which type of reliability is being assessed?

A researcher is conducting a study in which two separate groups of patients are given different treatments for chronic pain. The researcher is concerned that the results may not be generalizable to the larger population of chronic pain patients. This concern is related to which type of validity?

A new scale designed to measure patient satisfaction is shown to produce consistent results when administered to the same participants under similar conditions on different occasions. What is this an example of

A nurse researcher is conducting a study to evaluate the impact of a new exercise program on reducing symptoms of anxiety in patients with chronic illness. The researcher randomly assigns patients to either the experimental group, which receives the exercise program, or the control group, which does not. After 12 weeks, the researcher finds that the experimental group reports a significant reduction in anxiety symptoms compared to the control group. Which of the following statements best describes the concern related to external validity in this study?

The null hypothesis is a hypothesis that assumes there is no relationship between two variables.

Threats to Internal Validity

When a research team develops conclusions from their study and report that the findings are significant when they actually are not, the situation is referred to as

__________ - degree to which the findings of a study can be generalized to a larger population beyond the sample that was studied.

__________ - degree to which the results of a study can be applied to real-world situations

Which one of the following is a criteria to critique the quality and rigor of qualitative research?

Internal validity assesses for which of the following?

Data such as satisfaction level where the choices are highly satisfied, neutral and not satisfied are an example of which type of data?

When reviewing results of a study, the reader would like to know how far the variables are spread from the mean. Which descriptive analysis would be most helpful to the reader?

When reviewing distribution of data in descriptive statistics the “n” reported represents?

A _______is used to illustrate a graphical representation of quantitative data.

When reviewing specificity in the data analysis component of a report, the researcher identifies which of the following statements as being true?

Showing whether a dataset has a high number of extreme outliers or not, relative to a normal distribution

Describes the asymmetry or imbalance in a data distribution, indicating whether the data is clustered more towards one side of the distribution than the other.

A statistical measure that indicates how spread out a set of data points are from the mean, essentially showing how much variation exists within a data set

Type of qualitative data where variables are categorized into distinct groups with labels or names, having no inherent order or ranking between the categories.

Categories have a natural order or ranking, meaning you can arrange them from highest to lowest, but the intervals between each category are not necessarily equal.

Statistical method that involves summarizing and interpreting historical data to identify patterns, trends, and key features within a dataset, essentially describing "what happened" by looking at past events and providing insights

Describe how spread out or dispersed a set of data points are.

(False Negative): Failing to reject the null hypothesis when it is actually false.

Practice of using multiple data sources, methods, theories, or researchers to study the same phenomenon, aiming to increase the validity and credibility of research.

Used primarily in qualitative studies where a researcher deliberately sets aside their own personal beliefs, assumptions, and pre-understandings about a topic to avoid influencing the data collection and interpretation process.

Events that occur during data collection

Which of the following best describes selection bias in a research study?

In quantitative research, a key reason to ensure random sampling is:

Saturation in qualitative research refers to:

Stratified random sampling is most useful when:

A common challenge of convenience sampling is:

In measurement, a key difference between reliability and validity is that reliability:

A Likert scale question typically asks respondents to:

Systematic error in measurement is best described as

Which type of validity examines whether an instrument predicts future outcomes?

Simplicity, clarity, and avoidance of leading language are crucial when: