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Behavior Modification2
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Parker, Richard I.2
Davis, John L.1
Hagan-Burke, Shanna1
Vannest, Kimberly J.1
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Effect Size in Single-Case Research: A Review of Nine Nonoverlap Techniques
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Parker, Richard I.; Vannest, Kimberly J.; Davis, John L. – Behavior Modification, 2011
With rapid advances in the analysis of data from single-case research designs, the various behavior-change indices, that is, effect sizes, can be confusing. To reduce this confusion, nine effect-size indices are described and compared. Each of these indices examines data nonoverlap between phases. Similarities and differences, both conceptual and…
Descriptors: Research Design, Effect Size, Case Studies, Behavior Change
Median-Based Overlap Analysis for Single Case Data: A Second Study
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Parker, Richard I.; Hagan-Burke, Shanna – Behavior Modification, 2007
This article takes a further look at the percentage of data points exceeding the median (PEM) analysis method for single-case research data, first presented in this journal by Hsen-Hsing Ma. Ma examined the relationship between PEM and the established percentage of nonoverlapping data (PND) and then applied PEM in a meta-analysis of 61 data sets,…
Descriptors: Research Design, Meta Analysis, Case Studies, Outcomes of Treatment