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Identify and describe the three primary potential limitations of visual inspection when it is used as the primary data analysis method in single-subject research.
Question: Identify and describe the three primary potential limitations of visual inspection when it is used as the primary data analysis method in single-subject research.
Sample answer: Visual inspection has three potential limitations: First, it may lack the sensitivity needed to detect weak treatment effects. Second, its reliability can be questionable, as different researchers might arrive at distinct conclusions regarding the effectiveness of a treatment from the same data set. Third, unlike statistical measures of relationship strength used in group research, the overall judgments produced by visual inspection are difficult to efficiently summarize or systematically compare across multiple studies.
Key points:
- Visual inspection may lack the sensitivity to detect weak treatment effects.
- Visual inspection can have questionable reliability, with different researchers reaching different conclusions from the same data set.
- Overall judgments from visual inspection are difficult to efficiently summarize or compare across multiple studies compared to statistical measures of relationship strength.
Rubric: To receive full credit, the student must recall and clearly identify all three limitations: (1) low sensitivity to weak treatment effects, (2) questionable reliability/inter-rater disagreement when analyzing the same data set, and (3) difficulty in summarizing or comparing overall judgments across studies due to the lack of standardized statistical measures of relationship strength.
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Research Methods in Psychology - 4th American Edition @ KPU
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