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You are tasked with evaluating a pilot reading program at a local elementary school. The principal plans to implement the program for all third-grade students and measure their reading comprehension scores at the end of the year. In one to three sentences, identify the specific research design the principal is proposing and explain how you would apply the main limitation of this design to critique the principal's plan.
Question: You are tasked with evaluating a pilot reading program at a local elementary school. The principal plans to implement the program for all third-grade students and measure their reading comprehension scores at the end of the year. In one to three sentences, identify the specific research design the principal is proposing and explain how you would apply the main limitation of this design to critique the principal's plan.
Sample answer: The principal is proposing a one-group posttest only design. I would critique this plan by pointing out that without a control group of students who did not participate in the reading program, there is no way to determine what the scores would have been without it.
Key points:
- Identifies the proposed method as a one-group posttest only design.
- Applies the concept of lacking a control or comparison group to the specific reading program scenario.
- Explains that the principal cannot know what the reading scores would have been without the intervention.
Rubric: Full credit is awarded for correctly identifying the one-group posttest only design and applying its primary limitation (lack of a control or comparison group) to show that the principal cannot determine what the outcomes would have been without the program.
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Research Methods in Psychology - 4th American Edition @ KPU
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Examples of One-Group Posttest Only Designs
One-Group Pretest-Posttest Design
Why is the one-group posttest only design considered the weakest quasi-experimental approach?
If a researcher implements a new study technique with a class of students and only measures their performance at the end of the semester, they are using a one-group posttest only design and can confidently establish that the new technique caused the students' final grades.
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A research psychologist implements a new memory strategy with a group of participants and measures their performance on a recall task immediately afterward. Arrange the logical progression and analytical limitations of this one-group posttest only design in the correct sequence, from the initial implementation to the final conclusion about its internal validity.
You are designing a pilot study to evaluate a new 'Memory Enhancement' workshop for senior citizens. To minimize the time commitment for the participants and avoid exposing them to the testing materials beforehand, you choose to use a one-group posttest only design. Propose the correct methodological sequence that assembles this specific research design.
In a one-group posttest only design, the researcher measures the dependent variable both before and after the intervention occurs.
Match each characteristic of the one-group posttest only design with its specific methodological description to demonstrate your understanding of this quasi-experimental approach.
In the evaluation of a research report using a one-group posttest only design, a peer reviewer would judge the study's causal conclusions as invalid primarily due to the total absence of a(n) _____, which leaves the researcher with no baseline for comparison.
When analyzing the methodological limitations of a study using a one-group posttest only design, a researcher concludes that they cannot establish causality. This is because, without a control or comparison group, it is impossible to determine what the participants' outcomes would have been had they not completed the _____.
Imagine you are peer-reviewing a study and must evaluate the validity of its causal claims. Arrange the steps of this evaluation process in the correct logical order, starting with identifying the design characteristics and ending with the final evaluation of the causal claims.
Define the one-group posttest only design and describe its defining characteristics based on the provided text. Why is it considered the weakest type of quasi-experimental design? Please provide a concise analytical response.
Based on your understanding of quasi-experimental designs, diagnose the specific research design used in this scenario. Explain what crucial element is missing from this design and justify why this omission makes it difficult to interpret the survey results.
You are tasked with evaluating a pilot reading program at a local elementary school. The principal plans to implement the program for all third-grade students and measure their reading comprehension scores at the end of the year. In one to three sentences, identify the specific research design the principal is proposing and explain how you would apply the main limitation of this design to critique the principal's plan.