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ERIC Number: EJ926166
Record Type: Journal
Publication Date: 2011-Jul
Pages: 20
Abstractor: As Provided
Reference Count: 46
ISSN: ISSN-0145-4455
Effect Size in Single-Case Research: A Review of Nine Nonoverlap Techniques
Parker, Richard I.; Vannest, Kimberly J.; Davis, John L.
Behavior Modification, v35 n4 p303-322 Jul 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 computational, are highlighted. Seven of the nine indices are applied to a sample of 200 published time series data sets, to examine their distributions. A generic meta-analytic method is presented for combining nonoverlap indices across multiple data series within complex designs. (Contains 2 tables and 1 figure.)
SAGE Publications. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A