| Project/Area Number |
15K17267
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Educational psychology
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| Research Institution | Joetsu University of Education |
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Principal Investigator |
Okumura Taichi 上越教育大学, 大学院学校教育研究科, 准教授 (90547035)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2015: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
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| Keywords | ABデザイン / (AB)^1デザイン / 検定力分析 / 正確度分析 / 単一事例実験 / メタ分析 / 効果量 |
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| Outline of Final Research Achievements |
Based on the standardized effect size by Hedges et al. (2012), this study investigated a standardized effect size which evaluates the "pure" treatment effect by excluding the a natural linear trend over both the baseline and treatment phases if it exists.
Under some reasonable constraints, this study shows that a treatment effect corresponds to the interaction between time and treatment, which can be standardized by the square root of the sum of inter- and intra-individual variances.
Through this study, a new perspective on the statistical power analysis was also proposed; that is, the larger population effect size a researcher assumes, the wider confidence interval the researcher allows. This perspective is significant when we shed a light on the power analysis by comparing it with the precision analysis.
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