A quasi-experimental research design would be preferable to an experimental design in which of these situations?
Data will need to be collected in a real-world setting.
A smaller sample size is sufficient to obtain significant results.
Descriptive statistics will be used to analyze the data.
Demonstration of a cause-and-effect relationship is the desired outcome.
The Correct Answer is A
Choice A rationale
Quasi-experimental designs are often chosen when true experimental control is impossible or unethical in clinical environments. These designs allow researchers to study interventions in real-world settings where random assignment might not be feasible. By conducting research in naturalistic environments, findings may have higher ecological validity compared to strictly controlled laboratory settings. This flexibility is essential for nursing research conducted in busy hospital units where maintaining a strictly controlled experimental group is often practically difficult.
Choice B rationale
Sample size requirements are generally determined by power analysis rather than the specific choice between experimental or quasi-experimental designs. While quasi-experiments are useful when participant numbers are limited, they actually often require larger samples to compensate for the lack of randomization and potential confounding variables. Therefore, the preference for a quasi-experimental design is rarely based on the sufficiency of a smaller sample size, as statistical significance still depends on the effect size.
Choice C rationale
Descriptive statistics are used across all types of research designs to summarize demographic data and basic characteristics of the sample. They are not a primary reason to select a quasi-experimental design over a true experiment. Both designs rely heavily on inferential statistics to test for differences between groups or changes over time. Choosing a design based solely on the use of descriptive statistics would overlook the primary goal of quasi-experiments, which is evaluating interventions.
Choice D rationale
True experimental designs remain the gold standard for establishing cause-and-effect relationships because they involve randomization, control groups, and manipulation of the independent variable. Quasi-experimental designs are weaker in this regard because they lack random assignment, which increases the risk of internal validity threats. If the primary desired outcome is the definitive demonstration of causality, a true experimental design would be preferred over a quasi-experimental one whenever the study conditions allow.
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Correct Answer is A
Explanation
Choice A rationale
Approval by an Institutional Review Board (IRB) is the primary indicator that a study adhered to ethical standards, such as those outlined in the Belmont Report. The IRB independently reviews the study design to ensure participant protection, informed consent, and a favorable risk-to-benefit ratio. This oversight confirms that the research respects personhood, beneficence, and justice. Seeing this approval in a report provides the most direct evidence that ethical guidelines were scrutinized by an objective committee.
Choice B rationale
Discussing sampling techniques relates to the methodological rigor and external validity of a study rather than its ethical integrity. While choosing vulnerable populations requires ethical justification, the mere description of how subjects were selected does not prove that their rights were protected. Ethical standards specifically involve consent processes, anonymity, and safety protocols. Sampling discussions focus on how representative or appropriate the participants are for the research questions, which is a separate concern from ethical oversight.
Choice C rationale
Reliability and validity refer to the psychometric properties of research instruments and the overall accuracy of the findings. These are measures of technical quality and scientific merit in quantitative research. While conducting poor quality research can be seen as an ethical issue regarding resource waste, these metrics do not confirm adherence to human subject protection laws. Reliability ensures consistency of results, and validity ensures accuracy, but neither confirms that participants were treated ethically or provided informed consent.
Choice D rationale
Transparent data analysis procedures are essential for the auditability and reproducibility of a study, but they do not confirm ethical compliance. Analysis occurs after data collection is complete and focuses on interpreting the information gathered. Ethical concerns are most prominent during the recruitment and data collection phases where direct interaction with human subjects occurs. Detailed analysis descriptions provide evidence of intellectual honesty and technical skill, yet they are distinct from the formal ethical clearance provided by oversight bodies.
Correct Answer is B
Explanation
Choice A rationale
This title suggests an applied or clinical focus rather than a specific qualitative methodology. While it mentions cultural sensitivity, it implies the development of materials or a needs assessment. Ethnography specifically involves the study of a culture or subculture through immersion and observation. A title focusing on the need for education materials is more likely associated with a quality improvement project or a descriptive study aimed at practical resource development.
Choice B rationale
Ethnography focuses on the shared patterns of values, beliefs, and behaviors of a specific cultural group. By investigating the phenomenon of breast self-examination specifically within the African American female population, the researcher is looking at health practices through a cultural lens. This involves understanding how cultural identity and societal factors influence health behaviors. This focus on a specific group's cultural practices and meanings is the hallmark of a traditional ethnographic research design.
Choice C rationale
The term lived experience is the definitive indicator of a phenomenological study. Phenomenology aims to describe the essence of a human experience as it is lived by the participants. While this study focuses on postmenopausal women, the intent is to capture the universal nature of experiencing breast cancer. It does not explicitly seek to describe the cultural norms or social patterns of a specific group, which distinguishes it from the goals of ethnographic research.
Choice D rationale
This title likely points toward a phenomenological or grounded theory approach. It explores a specific psychological or social challenge, which is the internal struggle of maintaining femininity after a traumatic surgical procedure. Grounded theory often explores social processes or transitions, while phenomenology explores the meaning of the challenge. Because it lacks a focus on a defined cultural group or shared cultural behaviors, it does not fit the specific criteria for an ethnographical study.
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