What type of research design is used in the research study described in this statement? "To detect differences in the knowledge levels of older adults regarding osteoporosis, subjects were randomly assigned to a control group, which received printed materials, and an experimental group, which received computerized instruction. The same pretest and posttest were administered to all subjects."
Longitudinal.
Quasi-experimental.
Descriptive.
Experimental.
The Correct Answer is D
A. Longitudinal studies involve observing the same subjects over an extended period to assess changes over time. The study described involves comparing two groups (control and experimental) at one point in time, rather than observing changes in the same subjects over time.
B. Quasi-experimental studies resemble experimental designs but lack random assignment to groups or lack control over certain variables. The study described involves random assignment to groups (control and experimental), making it an experimental design rather than quasi-experimental.
C. Descriptive studies involve observing and describing phenomena without manipulating variables or testing hypotheses. The study described involves manipulation of the independent variable (instruction type) and comparison of outcomes, making it experimental rather than descriptive.
D. Experimental studies involve manipulating an independent variable to observe its effect on a dependent variable while controlling for other variables. The study described involves randomly assigning subjects to control and experimental groups, manipulating the type of instruction, and comparing knowledge levels before and after the intervention, indicating an experimental design.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. While a literature review may discuss the potential implications of the study findings for future research or practice, its primary purpose is to provide background information and theoretical framework for the research question.
B. Providing a context for the research question involves describing relevant theories, concepts, and findings from previous studies that inform the current study. This helps justify the research question, refine hypotheses or research objectives, and guide methodology and interpretation of results.
C. Ensuring that the study has not already been completed is one aspect of a literature review, but its broader purpose is to review existing literature to build on previous knowledge and identify gaps in the literature that the current study can address.
D. While the literature review may provide insights into different research designs used in previous studies, its primary purpose is not to identify the research design or explain the rationale for choosing the research methodology.
Correct Answer is C
Explanation
A. This question is best addressed through clinical protocols and guidelines rather than a research study.
B. This question is more about legal and regulatory considerations rather than empirical evidence.
C. This question involves a causal relationship that can be best investigated through a research study.
D. This question involves ethical considerations and legal regulations rather than empirical evidence.
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