Investigation of Single-Case Multiple-Baseline Randomization Tests of Trend and Variability
KeywordsSingle-case intervention research
Randomized multiple-baseline designs and analyses
Randomization tests of slopes and variability
MetadataShow full item record
PublisherSpringer Science and Business Media LLC
CitationLevin, J.R., Ferron, J.M. & Gafurov, B.S. Investigation of Single-Case Multiple-Baseline Randomization Tests of Trend and Variability. Educ Psychol Rev (2020). https://doi.org/10.1007/s10648-020-09549-7
JournalEDUCATIONAL PSYCHOLOGY REVIEW
RightsCopyright © Springer Science+Business Media, LLC, part of Springer Nature 2020
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at firstname.lastname@example.org.
AbstractPrevious simulation studies of randomization tests applied in single-case educational intervention research contexts have typically focused on A-to-B phase changes in means/levels. In the present simulation study, we report the results of two multiple-baseline investigations, one targeting between-phase changes in slopes/trends and the other targeting between-phase changes in variability. For each of these measures, we examine the comparative type I errors and powers of several randomization test procedures that have previously appeared in the literature. In so doing, we propose an alternative measure of variability that is more sensitive to detecting between-phase change than is the variance itself. We conclude by providing a summary table of recommended randomization test procedures for assessing different types of intervention-based effects associated with level, trend, and variability.
Note12 month embargo; published: 04 August 2020
VersionFinal accepted manuscript